stimulus sets

The abstract images used in the Projective Differential are grouped into different sets, called stimulus sets. There are several different sets of images available for use in PD administrations, and two basic kinds of sets–there are several JOG sets and one RESEARCH set. The set chosen for any given administration depends upon the context, as each set has different particular strengths.

JOG Stimulus sets (J10 or J30):

There are four versions of the J10, each of which is composed of 10 pairings that consist of all possible pairings of five abstract images. The pairs are sequenced such that no picture appears in successive pairings and each picture appears an equal number of times in left hand and in right hand positions. The four versions are:
  • Classic – The first of the current JOG sets to be developed, the Classic J10 is also the most used. It is rich in terms of generating a variety of associations to epitomizing (and antithetical) pictures, and is good at producing valid quantitative scores.
  • Evaluative – The Evaluative J10 set consists of the pictures that most clearly distinguish between connotative opposites such as “good vs. bad,” “strong vs. weak,” etc. thus making possible the calculation of the most valid quantitative scores among all the JOG sets.
  • Evocative – The Evocative J10 set was chosen on the basis of its ability to tap into evocative connotative space, i.e., in research the images proved to be rich in terms of the responses to “what do the images make you think of?” and “how do they make you feel?”, while also doing a very good job of producing quantitative connotative scores.
  • Open-Source – The newest version of the JOG. This set was recently developed in order to provide a freely available, online version for individual use as a “head-gut check.” It has not undergone the research and testing of the earlier versions, and as such less is known about its particular strengths in comparison with the other versions.
The J30 is actually a combination of the Classic, Evaluative, and Evocative J10s. It has the strengths of each of the J10s, but lacks the ability to determine a single epitomizing picture for topics, instead providing three. The J30 should be used when reliable individual level results are needed for comparisons through time or versus results from within a larger group. JOGs (as opposed to the Research set) must be used in situations when epitomizing picture scores or picture names are desired for a full utilization and appreciation of the PD choice results. Also, JOGs must be used in situations requiring certain further activities (i.e., Ice Breaker, Associations, Finder, Whole Brain Decision-making and Head/Gut Check).

RESEARCH (R12) Stimulus set:

The R12 set consists of 12 unique pairings of 24 PD pictures. Each picture only appears once in a single topic’s administration. R12 can be used when same choice scores, INcongruence and/or verbal interpretations along fifty prescored connotative dimensions are sufficient. This stimulus set is probably the most comprehensive for touching the multi-faceted nuances and extremities of PD accessible “connotative space”. On the other hand, it does not permit epitomizing picture scoring and related activities, and is therefore too limited for many consulting purposes.« Back to Glossary Index

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