Descriptor
| Comparative Analysis | 2 |
| Intelligence Differences | 2 |
| Behavior Problems | 1 |
| Downs Syndrome | 1 |
| Early Experience | 1 |
| Environmental Influences | 1 |
| Etiology | 1 |
| Exceptional Child Research | 1 |
| Family Influence | 1 |
| Genetics | 1 |
| Heredity | 1 |
| More ▼ | |
Source
| Amer J Ment Deficiency | 1 |
Author
| Johnson, Ronald C. | 2 |
| Abelson, Robert B. | 1 |
| Vandenberg, Steven G. | 1 |
Publication Type
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Johnson, Ronald C.; Abelson, Robert B. – Amer J Ment Deficiency, 1969
Descriptors: Behavior Problems, Comparative Analysis, Downs Syndrome, Etiology
Download full textVandenberg, Steven G.; Johnson, Ronald C. – 1966
Ronald C. Johnson argued that if early environmental stimulation or deprivation has a significant effect on intellectual ability, then individuals who are genetically identical and who are exposed to a common early environment should resemble one another more closely in IQ than similar individuals who have not shared a common environment. Johnson…
Descriptors: Comparative Analysis, Early Experience, Environmental Influences, Family Influence
