A theory of psychological scaling by Clyde Coombs

By Clyde Coombs

A few points of the methatheory of dimension -- the matter of mental dimension -- Definitions and postulates -- Genotypic parameters -- Phenotypic parameters -- the world of joint scales -- The unfolding procedure -- a few implications for the legislations of comparative judgment.

"This monograph describes the development of a mental idea which defines the knowledge inside the responses of people to stimuli. This has been complete via abstracting sure houses of habit that are invariant over content material. those were labeled and quantified in a concept of information which, with the quasi-formal foundation hypothesized the following, determines the genotypic inferences that may be made up of appear habit. at the foundation awarded right here sure theoretical options and interpretations are built and likewise convinced new experimental tactics and experimental kinfolk presented"--Preface. (PsycINFO Database list (c) 2015 APA, all rights reserved).  Read more...

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In general, observation of relative behavior requires use of the Method of Choice (which includes such methods as the Method of Rank Order, the Method of Paired Comparisons, and the Method of Triads); observation of irrelative behavior requires use of the Method of Single Stimuli (such as is found in many mental tests, questionnaires, and rating scales). In the Method of Choice the data do not provide information as to whether an individual w i l l or w i l l not, in an absolute sense, indorse a statement.

Certain segments of this problem have been studied and the results w i l l be presented. There are four basic genotypic parameters which span a space of four dimensions within which may be located patterns of characteristics of the phenotypic behavior. These four genotypic parameters which provide a basis for organizing the domain of scaling are the quantities h ^ ^ h i j O h i j ) . h[j(Chij,Qhij) . V . i . , and v . . , attitude scales, mental tests) the correlation coefficient ^ . ( ^ h i i ' ^ h i i ^ zero, indicating that the C h,j ' ' value which an individual takes in responding to a stimulus is independent of the Q value of the stimulus.

It is the intent of this section to develop certain parameters to describe or characterize manifest behavior. This will be done not for any single method of collecting data, but in the abstract and independent of the method of collecting data. Any particular method of data collection may then be studied to determine what information, i f any, such a method contains with respect to a particular parameter. In the next section some of the relations between the pattern of genotypic parameters and the pattern of phenotypic parameters w i l l be studied.

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