A Theory of Psychological Scaling by Clyde Coombs

By Clyde Coombs

This monograph describes the development of a mental thought that defines the data inside the responses of people to stimuli. This has been entire by means of abstracting convinced homes of habit which are invariant over content material. those were categorized and quantified in a idea of knowledge that, with the quasi-formal foundation hypothesized the following, determines the genotypic inferences that could be made up of show up habit.

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A Theory of Psychological Scaling

This monograph describes the development of a mental conception that defines the knowledge inside the responses of people to stimuli. This has been finished by way of abstracting convinced houses of habit which are invariant over content material. those were labeled and quantified in a concept of information that, with the quasi-formal foundation hypothesized the following, determines the genotypic inferences which may be made up of take place habit.

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P .. 1 1 -ij. 1) In the simplest case in which the sole source of controlled variance of the phenotypic scores (difficulties) of a stimulus over individuals is the spread of abilities of the individuals on the phenotypic level. Equation (46) simplifies to (47) V . = D^ . P . P .. 1 where (48) T ^ = ff^ (1 - r^ ). ••) . p .. P . 1. -ij This analysis provides a set of parameters for the manifest behavior of a stimulus over a group of individuals analogous to those describing the manifest behavior of an individual over a group of stimuli.

This will provide the basis for interpreting what i s observed on the behavioral level in terms of its significance and implications for the genotypic level. In Chapter VII a new experimental tech* nique deriving from the statements w i l l be extended beyond an earlier publication^, and in Chapter VIII the two Laws of Comparative Judgment w i l l be developed and the relation of one of these to the Unfolding Technique w i l l be derived and demonstrated experimentally. 24 Chapter IV GENOTYPIC PARAMETERS The quasi-formal basis for the development of a general theory of scaling has now been presented.

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.

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