| Category | Details |
|---|---|
| Description | The Picture Discrimination Test (PDT; Kagan et al., 1964) was created for studying information processing in children. The subject is shown two similar pictures and asked to detect the differences. The test consists of 15 items, with a 2-minute time limit per item. If the subject’s initial answer is incorrect, they are encouraged to guess again. The test evaluates the number of incorrect solution hypotheses, the number of correct first solution hypotheses, and the average time to solution across all items. |
| Author | Kagan, Jerome; Rosman, Bernice L.; Day, Deborah; Albert, Joseph; Phillips, William |
| Purpose | To assess analytic performance. |
| Construct | Analytic Performance |
| Instrument Type | Test |
| Source Used | Kagan, J., Rosman, B. L., Day, D., Albert, J., & Phillips, W. (1964). Information processing in the child: Significance of analytic and reflective attitudes. Psychological Monographs: General and Applied, 78(1), 1–37. https://doi.org/10.1037/h0093830 |
| Reliability | No reliability indicated. |
| Validity | No validity indicated. |
| Factor Analysis | No factor analysis indicated. |
| Classification | Development and Aging |
| Age Group | Childhood (birth-12 yrs); School Age (6-12 yrs) |
| Population Group | Human |
| Population Details | Location: United States; Sample: 2nd- and 3rd-Grade Children |
| Keywords | Test Development; Children’s Information Processing; Analytic Attitudes; Reflective Attitudes; Picture Discrimination Test |
| Index Terms | Measurement; Object Recognition; Test Construction |
| Test Year | 1964 |
| Format | The test consists of a set of 15 items, with 4 practice items and 2-minute time limits per item. |
| Administration Method | Paper |
| Test Items Available | No, contact the author or publisher for obtaining the test items. |
| Commercial | No |
| Fee | No |
| Language Present | English |
| Language Available | English |
Cite this article
Mohammed looti (2026). Picture Discrimination Test (PDT). PSYCHOLOGICAL SCALES. Retrieved from https://scales.arabpsychology.com/s/picture-discrimination-test-pdt/
Mohammed looti. "Picture Discrimination Test (PDT)." PSYCHOLOGICAL SCALES, 4 Apr. 2026, https://scales.arabpsychology.com/s/picture-discrimination-test-pdt/.
Mohammed looti. "Picture Discrimination Test (PDT)." PSYCHOLOGICAL SCALES, 2026. https://scales.arabpsychology.com/s/picture-discrimination-test-pdt/.
Mohammed looti (2026) 'Picture Discrimination Test (PDT)', PSYCHOLOGICAL SCALES. Available at: https://scales.arabpsychology.com/s/picture-discrimination-test-pdt/.
[1] Mohammed looti, "Picture Discrimination Test (PDT)," PSYCHOLOGICAL SCALES, vol. X, no. Y, ص Z-Z, April, 2026.
Mohammed looti. Picture Discrimination Test (PDT). PSYCHOLOGICAL SCALES. 2026;vol(issue):pages.