THE PRODUCT CYCLE HYPOTHESIS IN A NEW INTERNATIONAL ENVIRONMENT By RAYMOND VERNON* The last decade has produced a flowering of hypotheses that purport to explain the international trade and direct investment activities of firms in terms of the so- called product cycle.My purpose in this paper is to suggest that the power of such hypotheses has been changing.Two reasons account for that change:one,an increase in the geographical reach of many of the enterprises that are involved in the introduction of new products,a consequence of their having established many overseas subsidiaries;the other,a change in the national markets of the advanced industrialized countries,which has reduced some of the differences that had previously existed between such markets. A Word on Theory The fact that new products constantly appear,then mature,and eventually die has always fitted awkwardly into the mainstream theories of international trade and international investment.Hume,Ricardo,Marshall,Ohlin,Williams,and others have observed the phenomenon in passing,without attempting any rigorous formulation of its implications for international trade and investment theory.In the past decade or two,however,numerous efforts have been made to fill the gap. Some have dealt mainly with the trade aspects of the phenomenon.'But some have pushed beyond the immediate trade effects,tracing out a pattern that eventually culminated in foreign direct investments on the part of the innovating firm.2 According to the product cycle hypothesis,firms that set up foreign producing facilities characteristically do so in reliance on some real or imagined monopolistic advantage.In the absence of such a perceived advantage,firms are loath to take David Felix,Seev Hirsch,Sanjaya Lall.L T.Wells,Jr.and L.H.Wortzel reacted critically to various points in an earlier draft,a fact that led to some significant revisions. I For instance,M.V.Posner,'International Trade and Technical Change,Ozford Economic Papers, October 1961,pp.323-341:Gary Hufbauer,Synthetic Materials and the Theory of International Trade (Cambridge:Harvard University Press,1966);Seev Hirsch,'The Product Cycle Model of International Trade-A Multi-Country Cross Section Analysis,Oxford Bulletin of Economics and Statistics,November 1975,vol.37,no.4,pp.305-317:W.B.Walker,'Industrial Innovation and International Trading Performance',mimeo.Science Policy Research Unit,Sussex University,October 30,1975;and M.P. Claudon,International Trade and Technology:Models of Dynamic Comparalive Advantages (Washington, D.C.:University Press of America,1977). 2S.H.Hymer,The International Operations of National Firms (Cambridge:MIT Press,1976)based on the author's 1960 Ph.D.thesis;Raymond Vernon,'International Investment and International Trade in the Product Cycle',Quarterly Journal of Economics,May 1966,pp.190-207:W.H.Gruber and others. 'The R&D Factor in International Investment of US Industries'.Journal of Political Ecomomy,February 1967,pp.20-37:Thomas Horst,'The Firm and Industry Determinants of the Decision to Invest Abroad:An Empirical Study'.Revie of Ecomomics and Statistics,vol.54.August 1972,pp.258-66:S.P. Magee,'Multinational Corporations,The Industry Technology Cycle and Development.fournal of World Trade Law,vol.11,no.4.July-August 1977,pp.297-321;P.I.Buckley and Mark Casson,The Fulure of the Multinational Enterprise (New York:Holmes and Meier,1976):Paul Krugman,'A Model of Innovation,Technology Transfer,and The World Distribution of Income'.Journal of Political Economy. April1979,pp.253-266. 255
THE PRODUCT CYCLE HYPOTHESIS IN A NEW INTERNATIONAL ENVIRONMENT By RAYMOND VERNON* The last decade has produced a flowering of hypotheses that purport to explain the international trade and direct investment activities of firms in terms of the socalled product cycle. My purpose in this paper is to suggest that the power of such hypotheses has been changing. Two reasons account for that change: one, an increase in the geographical reach of many of the enterprises that are involved in the introduction of new products, a consequence of their having established many overseas subsidiaries; the other, a change in the national markets of the advanced industrialized countries, which has reduced some of the differences that had previously existed between such markets. A Word on Theory The fact that new products constantly appear, then mature, and eventually die has always fitted awkwardly into the mainstream theories of international trade and international investment. Hume, Ricardo, Marshall, Ohlin, Williams, and others have observed the phenomenon in passing, without attempting any rigorous formulation of its implications for international trade and investment theory. In the past decade or two, however, numerous efforts have been made to fill the gap. Some have dealt mainly with the trade aspects of the phenomenon.' But some have pushed beyond the immediate trade effects, tracing out a pattern that eventually culminated in foreign direct investments on the part of the innovating firm.2 According to the product cycle hypothesis, firms that set up foreign producing facilities characteristically do so in reliance on some real or imagined monopolistic advantage. In the absence of such a perceived advantage, firms are loath to take * David Felix, Seev Hirsch,Sanjaya Lau, L. T. Wells, Jr. and L. H. Wortzel reacted critically to various points in an earlier draft, a fact that led to some significant revisions. I For instance, M. V. Posner, 'International Trade and Technical Change', Oxford Economic Papers, October 1961, pp. 323-341; Gary Hufbauer, Synthetic Materials and the Theory of International Trade (Cambridge: Harvard University Press, 1966); Seev Hirsch, 'The Product Cycle Model of International TradeA Multi-Country Cross Section Analysis', Oxford Bulletin of Economics and Statistics, November 1975, vol. 37, no. 4, pp. 305-317; W. B. Walker, 'Industrial Innovation and International Trading Performance', mimeo. Science Policy Research Unit, Sussex University, October 30, 1975; and M. P. Claudon, International Trade and Technology: Models of Dynamic Comparative Advantages (Washington, D.C.: University Press of America, 1977). 2S.H. Hymer, The International Operations of National Firms (Cambridge: MIT Press, 1976) based on the author's 1960 Ph.D. thesis; Raymond Vernon, 'International Investment and International Trade in the Product Cycle', Quarterly Journal of Economics, May 1966, pp. 190-207; W. H. Gruber and others, 'The R & D Factor in International Investment of US Industries',Journal of Political Economy, February 1967, pp. 20-37; Thomas Horst, 'The Firm and Industry Determinants of the Decision to Invest Abroad: An Empirical Study', Review of Economics and Statistics, vol. 54, August 1972, pp. 258-66; S. P. Magee, 'Multinational Corporations, The Industry Technology Cycle and Development',Journal of World Trade Law, vol. 11, no. 4, July-August 1977, pp.297-321; P.J. Buckley and Mark Casson. The Future of the Multinational Enterprise (New York: Holmes and Meier, 1976); Paul Krugman, 'A Model of Innovation, Technology Transfer, and The World Distribution of Income',Journal of Political Economy, April 1979, pp. 253-266. 255
256 BULLETIN on the special costs and uncertainties of operating a subsidiary in a foreign environment.3 One such special strength is an innovational lead. The product cycle hypothesis begins with the assumption that the stimulus to innovation is typically provided by some threat or promise in the market.4 But according to the hypothesis.firms are acutely myopic:their managers tend to be stimulated by the needs and opportunities of the market closest at hand,the home market. The home market in fact plays a dual role in the hypothesis.Not only is it the source of stimulus for the innovating firm:it is also the preferred location for the actual development of the innovation.The first factor that has pushed innovating firms to do their development work in the home market has been simply the need for engineers and scientists with the requisite skills.That requirement.when gauged through the eyes of the typical innovating form,has tended to rule out sites in most developing countries and has narrowed the choice to some site in the advanced industrialized world.As between such advanced country sites,the home market has generally prevailed.s Locating in the home market.engineers and scientists can interact easily with the prospective customers whose needs they hope to satisfy.and can check constantly with (or be checked by)the specialists at headquarters who are concerned with financial and production planning. The propensity to cluster in the home market is fortified by the fact that there are some well-recognized economies to be captured by an innovating team that is brought together at a common location.s These include the usual advantages that go with subdividing any task among a number of specialists.and the added advantages of maintaining efficiency of communication among the research specialists.7 The upshot is that the innovations of firms headquartered in some given market tend to reflect the characteristics of that market.Historically,therefore.US firms have developed and produced products that were labour-saving or responded to high-income wants:continental European firms.products and processes that were material-saving and capital-saving:and Japanese firms,products that conserved not only material and capital but also space.s 3 That is a central proposition of the S.H.Hymer work,cited earlier.See also my 'The Location of Economic Activity'.in J.H.Dunning.Economic Analysis and the Multinational Enterprise (London: George Allen and Unwin,1970).pp.83-114. Various empirical studies demonstrate that innovations which do not arise out of a market stimulus-innovations,for instance,that are dreamed up by the laboratory as a clever application of some new scientific capability-have a relatively low chance of industrial success.See for instance Sumner Myers and Donald Marquis,Successful Industrial Innouations,National Science Foundation Report No.69-17,G.P.O.,Washington,1969,p.31. s For econometric evidence of the tie between the choice of a production location,skills and innovation,see Sanjaya Lall.'Monopolistic Advantages and Foreign Involvement by US.Manufacturing Industry'.Oxford Economic Papers,forthcoming,March 1980. For evidence of such clustering.see D.B.Creamer,Overseas Research and Development by United States Multinationals,1966-1975(New York:The Conference Board,1976):Robert Ronstadt,Research and Development Abroad by U.S.Multinalionals (New York:Praeger Publishers,1977):and Vernon. Storm Over the Multinationals.pp.43-45. See especially T.J.Allen,Managing the Flow of Technology (Cambridge:MIT Press,1978).An important exception is pharmaceuticals,a case in which US regulation has driven the innovation process abroad.See e.g.H.G.Grabowski and J.M.Vernon,'Innovation and Invention:Consumer Protection Regulation in Ethical Drugs'.American Economic Review,vol.67.no.1.1977,pp.359-364. 8 For evidence,see W.H.Davidson.'Patterns of Factor-Saving Innovation in the Industrialized World',European Economic Review,No.8.1976.pp.207-217
256 BULLETIN on the special costs and uncertainties of operating a subsidiary in a foreign environment3 One such special strength is an innovational lead. The product cycle hypothesis begins with the assumption that the stimulus to innovation is typically provided by some threat or promise in the market4 But according to the hypothesis, firms are acutely myopic; their managers tend to be stimulated by the needs and opportunities of the market closest at hand, the home market. The home market in fact plays a dual role in the hypothesis. Not only is it the source of stimulus for the innovating firm; it is also the preferred location for the actual development of the innovation. The first factor that has pushed innovating firms to do their development work in the home market has been simply the need for engineers and scientists with the requisite skills. That requirement, when gauged through the eyes of the typical innovating form, has tended to rule out sites in most developing countries and has narrowed the choice to some site in the advanced industrialized world. As between such advanced country sites, the home market has generally prevailed.5 Locating in the home market, engineers and scientists can interact easily with the prospective customers whose needs they hope to satisfy, and can check constantly with (or be checked by) the specialists at headquarters who are concerned with financial and production planning. The propensity to cluster in the home market is fortified by the fact that there are some well-recognized economies to be captured by an innovating team that is brought together at a common location.6 These include the usual advantages that go with subdividing any task among a number of specialists, and the added advantages of maintaining efficiency of communication among the research specialists.7 The upshot is that the innovations of firms headquartered in some given market tend to reflect the characteristics of that market. Historically, therefore, US firms have developed and produced products that were labour-saving or responded to high-income wants; continental European firms, products and processes that were material-saving and capital-saving; and Japanese firms, products that conserved not only material and capital but also space.8 That is a central proposition of the S. H. Hymer work, cited earlier. See also my 'The Location of Economic Activity', in J. H. Dunning, Economic Analysis and the Multinational Enterprise (London: George Allen and Unwin, 1970), pp.83-114. Various empirical studies demonstrate that innovations which do not arise out of a market stimulusinnovations, for instance, that are dreamed up by the laboratory as a clever application of some new scientific capabilityhave a relatively low chance of industrial success. See for instance Sumner Myers and Donald Marquis, Successful Industrial Innovations, National Science Foundation Report No. 69-17, G.P.O., Washington, 1969, P. 31. For econometric evidence of the tie between the choice of a production location, skills and innovation, see Sanjaya Lau, 'Monopolistic Advantages and Foreign Involvement by U.S. Manufacturing Industry', Oxford Economic Papers, forthcoming, March 1980. 6 For evidence of such clustering, see D. B. Creamer, Overseas Research and Development by Unite4 States Multinationals, 1966-1975 (New York: The Conference Board, 1976); Robert Ronstadt, Research and Development Abroad by U.S. Multinationals (New York: Praeger Publishers, 1977): and Vernon, Storm Over the Multinationals, pp. 43-45. 7See especially T. J. Allen, Managing the Flow of Technology (Cambridge: MIT Press, 1978). An important exception is pharmaceuticals, a case in which US regulation has driven the innovation process abroad. See e.g. H. G. Grabowski and J. M. Vernon, 'Innovation and Invention: Consumer Protection Regulation in Ethical Drugs', American Economic Review, vol. 67, no. 1, 1977, pp. 359-364. 8 For evidence, see W. H. Davidson, 'Patterns of Factor-Saving Innovation in the Industrialized World', European Economic Review, No. 8, 1976, pp. 207-217
THE PRODUCT CYCLE HYPOTHESIS IN A NEW INTERNATIONAL ENVIRONMENT 257 If innovating firms tend to scan their home markets with special intensity,the chances are greatly increased that their first production facilities will also be located in the home market.In many cases,the transitions from development work to pilot plant operation to first commercial production take place in imperceptible steps.But other factors also figure in the choice.One is the fact that if the firm perceives its principal market as being at home,it may prefer a home location to minimize transport costs.The second factor is that the specifications for new products and the optimal methods for manufacturing such products are typically in flux for some time;hence,fixing the optimal location of the first production site is bound to be an exercise based on guesswork.A final factor that may explain the tendency to produce at home is the characteristic inelasticity in the demand of the earliest users of many new products.That inelasticity is thought to make the innovator relatively indifferent to questions of production cost at the time of introduction of a new product. Once the innovator has set up its first production unit in the home market,any demand that may develop in a foreign market would ordinarily be served from the existing production unit.Eventually,however,the firm may consider other alternatives,such as that of licensing a foreign producer or of setting up its own producing subsidiary abroad.For new products,the licensing alternative may prove an inferior choice because of inefficiencies in the international market for technology.3 If licensing is not the preferred choice,then the firm makes the usual familiar comparison between the delivered cost of exports and the cost of overseas production.That is,the marginal costs of producing for export in the home unit plus international transport costs and duties are compared with the full cost of producing the required amount in a foreign subsidiary. Although not essential to the product cycle hypothesis,it is commonly assumed that a triggering event is likely to be required before the producer will seriously make the calculations that could lead to the creation of a foreign producing facility.The triggering event ordinarily occurs when the innovator is threatened with losing its monopoly position.In the usual case,rival producers appear, prepared to manufacture the product from locations that could undersell the original innovator. The obvious question is why the original innovator was not already aware that the costs of production might be lower abroad.Part of the answer may lie in the indeterminateness of the threat before it has actually materialized:the difficulty of deciding what is at stake in failing to find the least-cost location,what alternative sites need to be investigated,and what the costs of investigation are likely to be. These conditions change,however,as the threat begins to crystallize. Eventually,it may be clear that the innovator is threatened with the loss of its See Buckley and Casson,pp.36-45,68-69.Their observations are strengthened by data presented in Raymond Vernon and W.H.Davidson,'Foreign Production of Technology-Intensive Products by US-Based Multinational Enterprises'.Working Paper 79-5.Harvard Business School,1979,xeroxed, p.66.These data show that in establishing a source of foreign production for 221 innovations,32 large US-based multinational enterprises elected the subsidiary route far more frequently than licensing.but the degree of preference declined as the innovation aged.For similar conclusions relating to petrochemicals,see R.B.Stobaugh,'The Product Life Cycle,U.S Exports,and International Investment', unpublished D.B.A.thesis,Harvard Business School,1968
THE PRODUCT CYCLE HYPOTHESIS IN A NEW INTERNATIONAL ENVIRONMENT 257 If innovating firms tend to scan their home markets with special intensity, the chances are greatly increased that their first production facilities will also be located in the home market. In many cases, the transitions from development work to pilot plant operation to first commercial production take place in imperceptible steps. But other factors also figure in the choice. One is the fact that if the firm perceives its principal market as being at home, it may prefer a home location to minimize transport costs. The second factor is that the specifications for new products and the optimal methods for manufacturing such products are typically in flux for some time; hence, fixing the optimal location of the first production site is bound to be an exercise based on guesswork. A final factor that may explain the tendency to produce at home is the characteristic inelasticity in the demand of the earliest users of many new products. That inelasticity is thought to make the innovator relatively indifferent to questions of production cost at the time of introduction of a new product. Once the innovator has set up its first production unit in the home market, any demand that may develop in a foreign market would ordinarily be served from the existing production unit. Eventually, however, the firm may consider other alternatives, such as that of licensing a foreign producer or of setting up its own producing subsidiary abroad. For new products, the licensing alternative may prove an inferior choice because of inefficiencies in the international market for technology.9 If licensing is not the preferred choice, then the firm makes the usual familiar comparison between the delivered cost of exports and the cost of overseas production. That is, the marginal costs of producing for export in the home unit plus international transport costs and duties are compared with the full cost of producing the required amount in a foreign subsidiary. Although not essential to the product cycle hypothesis, it is commonly assumed that a triggering event is likely to be required before the producer will seriously make the calculations that could lead to the creation of a foreign producing facility. The triggering event ordinarily occurs when the innovator is threatened with losing its monopoly position. In the usual case, rival producers appear, prepared to manufacture the product from locations that could undersell the original innovator. The obvious question is why the original innovator was not already aware that the costs of production might be lower abroad. Part of the answer may lie in the indeterminateness of the threat before it has actually materialized: the difficulty of deciding what is at stake in failing to find the least-cost location, what alternative sites need to be investigated, and what the costs of investigation are likely to be. These conditions change, however, as the threat begins to crystallize. Eventually, it may be clear that the innovator is threatened with the loss of its See Buckley and Casson, pp. 36-45, 68-69. Their observations are strengthened by data presented in Raymond Vernon and W. H. Davidson, 'Foreign Production of Technology-Intensive Products by [IS-Based Multinational Enterprises', Working Paper 79-5, Harvard Business School, 1979, xeroxed, p. 66. These data show that in establishing a source of foreign production for 221 innovations, 32 large US-based multinational enterprises elected the subsidiary route far more frequently than licensing, but the degree of preference declined as the innovation aged. For similar conclusions relating to petrochemicals, see R. B. Stobaugh, 'The Product Life Cycle, U.S. Exports, and International Investment', unpublished D.B.A. thesis, Harvard Business School, 1968
258 BULLETIN business in a given foreign market.At that point,the areas to be investigated as possible production sites have been narrowed while the size of the risk has been more explicitly defined.Accordingly,the decision whether to invest in added information is more readily made.Once having felt compelled to focus on the issue,the innovator will decide in some cases to set up a local producing unit in order to prolong some of the advantages that were created by its original monopoly. Two Critical Changes The networks'spread.For the past three decades or so,the process of innovation, export,and investment has been progressing full tilt.One result has been a transformation in the industries in which innovations tend to be especially prominent,such as chemicals,electronics,machinery,and transportation equip- ment.In industries such as these,innovating firms that are limited to their own home markets no longer are very common.Instead,enterprises with highly developed multinational networks of producing units typically account for more than half the global output in their respective product lines. In spreading their networks of subsidiaries around the world,multinational companies have followed some reasonably well-defined patterns.These patterns offer some strong clues regarding the changing perceptions of the enterprises and their likely lines of future behaviour. First,a word on the extent of the spread itself.Table I compares the scope of TABLE 1 Networks of Foreign Manyfacturing Subsidiaries of 315 Multinational Companies 1950and1970s Number of enterbrises 180 US-based 135 MNCs based in UK with neliorks including MNCs and Europe 19501975 1950 1970 Fewer than 6 countries 138 9 116 31 6 to 20 countries 43 128 16 75 More than 20 countries 0 44 29 Source:Harvard Multinational Enterprise Project. the overseas subsidiary networks of a group of the world's largest firms in 195o with the networks of those same firms in the I97os.The dramatic increase in the overseas networks of such firms is apparent. Detailed data have been developed for the 180 US firms in the group,indicating more exactly how the overseas spread took place.10 According to these data,the overseas spread of the firms in our sample was consistent and stable throughout the three decades following World War II.Firms typically set up their subsidiaries, product lines,and new products in a sequence that began with the geographical areas with which they were most familiar,such as Canada and the United Kingdom, and eventually spread to those that had originally been least familiar,such as Asia and Africa.As time went on,however,the unfamiliar became less so,and the 10 The data on which the next few paragraphs are based are presented in detail in Raymond Vernon and W.H.Davidson,'Foreign Production of Technology-Intensive Products by U.S.-Based Multinational Enterprises,cited earlier
258 BULLETIN business in a given foreign market. At that point, the areas to be investigated as possible production sites have been narrowed while the size of the risk has been more explicitly defined. Accordingly, the decision whether to invest in added information is more readily made. Once having felt compelled to focus on the issue, the innovator will decide in some cases to set up a local producing unit in order to prolong some of the advantages that were created by its original monopoly. Two Critical Changes The networks' spread. For the past three decades or so, the process of innovation, export, and investment has been progressing full tilt. One result has been a transformation in the industries in which innovations tend to be especially prominent, such as chemicals, electronics, machinery, and transportation equipment. In industries such as these, innovating firms that are limited to their own home markets no longer are very common. Instead, enterprises with highly developed multinational networks of producing units typically account for more than half the global output in their respective product lines. In spreading their networks of subsidiaries around the world, multinational companies have followed some reasonably well-defined patterns. These patterns offer some strong clues regarding the changing perceptions of the enterprises and their likely lines of future behaviour. First, a word on the extent of the spread itself. Table i compares the scope of TABLE 1 Networks of Foreign Manufacturing Subsidiaries of 315 Multinational Companies 1950 and 1970s Source: Harvard Multinational Enterprise Project. the overseas subsidiary networks of a group of the world's largest firms in i 950 with the networks of those same firms in the i 970s. The dramatic increase in the overseas networks of such firms is apparent. Detailed data have been developed for the 180 US firms in the group, indicating more exactly how the overseas spread took place.'° According to these data, the overseas spread of the firms in our sample was consistent and stable throughout the three decades following World War II. Firms typically set up their subsidiaries, product lines, and new products in a sequence that began with the geographical areas with which they were most familiar, such as Canada and the United Kingdom, and eventually spread to those that had originally been least familiar, such as Asia and Africa. As time went on, however, the unfamiliar became less so, and the 10 The data on which the next few paragraphs are based are presented in detail in Raymond Vernon and W. H. Davidson, Foreign Production of Technology-Intensive Products by U.S-Based Multinational Enterprises', cited earlier. Number of enterprises with networks including 180 US-based MNCs 1950 1975 135 MNCs based in UK and Europe 1950 1970 Fewer than 6 countries 138 9 116 31 6to 20 countries 43 128 16 75 More than 20 countries 0 44 3 29
THE PRODUCT CYCLE HYPOTHESIS IN A NEW INTERNATIONAL ENVIRONMENT 259 disposition to move first into the traditional areas visibly declined.To illustrate: For product lines introduced abroad by the 180 firms before 1946,the probability that a Canadian location would come earlier than an Asian location was 79 percent; but for product lines that were introduced abroad after 1960,the probability that Canada would take precedence over Asia had dropped to only 59 percent. The consequences of this steady shift in preferences could be seen in a corresponding shift in the geographical distribution of the foreign subsidiaries of the 180 firms.Before 1946,about 23 percent of the subsidiaries had been located in Canada;but by 1975,the proportion was about 13 percent,with the offsetting gains being recorded principally in Asia,Africa,and the Middle East. With numerous indications that US firms were feeling at ease over a wider portion of the earth's surface,it comes as no surprise that the interval of time between the introduction of any new product in the United States and its first production in a foreign location has been rapidly shrinking.Table 2 portrays the time lapse between the introduction of 954 products in the United States and their first overseas production via the manufacturing subsidiaries of the introducing firm. The data also suggest in various ways that the trends just discussed have been strongly self-reinforcing.For instance,firms that had experienced a considerable number of prior transfers to their foreign producing subsidiaries were quite consistently quicker off the mark with any new product than were firms with fewer TABLE 2 Spread of Production of 954 New Products by 57 US-Based MNCs to their Foreign Manufacturing Subsidiaries,Classified by Period when initially introduced in the United States Period when Number of Percentage transferred abroad,by number of years introduced in products between USintroduction and initial transfer US within I year after within 2-3 years after 1945 56 10.7 89 19461950 149 8.1 10.1 1951-1955 147 7.5 10.2 1956-1960 180 13.3 17.8 1961-1965 165 22.4 17.0 1966-1970 158 29.7 15.8 1971-1975 99 35.4 162 Total 954 18.0 140 Source:Vernon and Davidson,cited in text. prior transfers.Besides,as firms introduced one product after another into a given country,the lapse of time between the introduction of successive products in that country steadily declined. All told,therefore,the picture is one of an organic change in the overseas networks of large US-based firms.The rate of spread of these networks,whether measured by subsidiaries or by product lines,is slightly lower in the first half of the Some measures employed in the Vernon-Davidson study-counts based on 954 individual products rather than on subsidiaries or product lines-show Latin America also increasing its relative share.See Table 17,p.52 of the report
THE PRODUCT CYCLE HYPOTHESIS IN A NEW INTERNATIONAL ENVIRONMENT 259 disposition to move first into the traditional areas visibly declined. To illustrate: For product lines introduced abroad by the 180 firms before 1946, the probability that a Canadian location would come earlier than an Asian location was 79 percent; but for product lines that were introduced abroad after 1960, the probability that Canada would take precedence over Asia had dropped to only 59 percent. The consequences of this steady shift in preferences could be seen in a corresponding shift in the geographical distribution of the foreign subsidiaries of the 180 firms. Before 1946, about 23 percent of the subsidiaries had been located in Canada; but by 1975, the proportion was about 13 percent, with the offsetting gains being recorded principally in Asia, Africa, and the Middle East." With numerous indications that US firms were feeling at ease over a wider portion of the earth's surface, it comes as no surprise that the interval of time between the introduction of any new product in the United States and its first production in a foreign location has been rapidly shrinking. Table 2 portrays the time lapse between the introduction of 954 products in the United States and their first overseas production via the manufacturing subsidiaries of the introducing firm. The data also suggest in various ways that the trends just discussed have been strongly self-reinforcing. For instance, firms that had experienced a considerable number of prior transfers to their foreign producing subsidiaries were quite consistently quicker off the mark with any new product than were firms with fewer TABLE 2 Spread of Production of 954 New Products by 57 US-Based MNCs to their Foreign Manufacturing Subsidiaries, Classified by Period when initially introduced in the United States Source: Vernon and Davidson, cited in text. prior transfers. Besides, as firms introduced one product after another into a given country, the lapse of time between the introduction of successive products in that country steadily declined. All told, therefore, the picture is one of an organic change in the overseas networks of large US-based firms. The rate of spread of these networks, whether measured by subsidiaries or by product lines, is slightly lower in the first half of the h1 Some measures employed in the Vernon-Davidson studycounts based on 954 individual products rather than on subsidiaries or product linesshow Latin America also increasing its relative share. See Table 17, p. 52 of the report. Period when introduced in US Number of Percentage transferred abroad, by number of years products between US introduction and initial transfer within 1 year after within 2-3 years after 0/ 0/ /0 /0 1945 56 10.7 8.9 1946-1950 149 8.1 10.1 1951-1955 147 7.5 10.2 1956-1960 180 13.3 17.8 1961-1965 165 22.4 17.0 1966-1970 158 29.7 15.8 1971-1975 99 35.4 16.2 Total 954 18.0 14.0