Across
- 3. deficiency of thyroxin results in a condition that is characterized by stunted growth of the brain leading to mental retardation
- 4. one biological factor important to the growth of intelligence
- 8. deprivation absence of key forms of environmental stimulation
- 9. defects in these can effect the growth of intelligence
- 10. this gland is the master of all glands
Down
- 1. hormone secreted by the thyroid gland
- 2. endocrine glands secrete this
- 5. the process of providing or obtaining food necessary for health and growth
- 6. study by ______ and ______ indicate that an enriched environment leads to growth of intelligence
- 7. parents passing their genes to their offspring