The Basic Principles of research design of comparative research Morris zelditch(1971) specifies that the design of comparative research is conditioned largely by four rules Rule of one variable: No second variable u is definitely the cause or effect of v if there exists a third variable, w, that is present or absent in the same circumstances as U. In order to verify that U and v are correlated in the design where there are other 2 variables, say w and x, we need at least eight cases(2x2 a x2 )of the following nature
The Basic Principles of Research Design of Comparative Research Morris Zelditch (1971) specifies that the design of comparative research is conditioned largely by four rules: Rule of One Variable : No second variable U is definitely the cause or effect of V if there exists a third variable, w, that is present or absent in the same circumstances as U. In order to verify that U and V are correlated in the design where there are other 2 variables, say W and X, we need at least eight cases (2x2x2) of the following nature
The Basic Principles of research design of comparative research e Effect Results 丿WX Method ofagreement VWX 2110 VWX UUU VWX Method of Di∥ erence WWX 5678 010 0000 VWX U 011
The Basic Principles of Research Design of Comparative Research Case Causes Effect Results V W X U (Method of Agreement) 1 1 1 1 1 VWX U 2 1 1 0 1 VWX U 3 1 0 1 1 VWX U 4 1 0 0 1 VWX U (Method of Difference) 5 0 0 0 0 VWX U 6 0 0 1 0 VWX U 7 0 1 0 0 VWX U 8 0 1 1 0 VWX U
Charles ragins Boolean approach to Comparative analysis Comparative Method MOVING BEYOND QUALITATIVE AND QUANTITATIVE STRATEGIES Charles C. ragin Winner of the intemational Social Science Council STEIN ROKKAN PRIZE in Comparative Research
Charles Ragin’s Boolean Approach to Comparative Analysis
Charles ragins Boolean approach to Comparative analysis The operation of the Boolean algebra consist of the following features Binary data and truth table
Charles Ragin’s Boolean Approach to Comparative Analysis The operation of the Boolean Algebra consist of the following features Binary data and truth table
Table 3 resentative Truth Table with Four Causal Conditions C NI ondition Outcome umber XI [a es 0000000011111111 X00001111000011 X0011001100110011 X0101010101010101 Y0010101111000101 8605371593235586 11