Descriptor
Author
| Williams, Charlotte L. | 2 |
| Blake, Kathryn A. | 1 |
| Cohen, Ronald L. | 1 |
| MacMillan Donald L. | 1 |
| Nealson, Judi | 1 |
| Tillman, M. H. | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
MacMillan Donald L. – Amer J Ment Deficiency, 1969
Descriptors: Age Differences, Cognitive Development, Exceptional Child Research, Intelligence Differences
Download full textBlake, Kathryn A.; Williams, Charlotte L. – 1968
Knowledge of English morphology was studied in intellectually retarded (IQ 50 to 80), normal (IQ 90 to 110), and superior (IQ 120+) children at four chronological age (CA) levels from 4 to 12. The task involved using inflectional and derivational suffixes at two levels of generality: producing inflected and derived forms of English words, and…
Descriptors: Age Differences, English, Exceptional Child Research, Gifted
Peer reviewedCohen, Ronald L.; Nealson, Judi – Intelligence, 1979
Retarded subjects were compared with mental- and chronological-age matched controls on serial short-term memory (STM) tasks. Retarded subjects were inferior to the control groups on both primacy and recency items, under two recall conditions. These data are discussed in relation to possible mechanisms underlying IQ-related individual differences…
Descriptors: Age Differences, Cognitive Processes, Elementary Secondary Education, Individual Differences
Williams, Charlotte L.; Tillman, M. H. – 1968
The effects of age and intelligence levels upon word associations were studied in 96 intellectually retarded, normal, and superior children with IQ's of 65 to 80, 91 to 110, and 117 to 158 respectively. A word association and a word usage task (reliability coefficients of .91 and .98) called for homogeneous responses to six form classes--count…
Descriptors: Abstract Reasoning, Adjectives, Adverbs, Age Differences
