Question

question 8 (1 point) the strongest support for hereditys influence on intelligence is the finding that: children in impoverished families have similar intelligence scores identical twins, but not other siblings, have nearly identical intelligence test scores mental similarities between adopted siblings increase with age the correlation between intelligence test scores of fraternal twins is higher than that for other siblings question 9 (1 point) the environmental influence that has the clearest, most profound effect on intellectual development is: exposing normal infants to educational dvds before age 1 being raised in conditions of extreme deprivation growing up in an economically disadvantaged home or neighborhood being an identical twin

Explanation:

For question 8, identical twins share 100% of their genes. The fact that only they (among siblings) have nearly identical intelligence test scores strongly suggests a genetic (hereditary) influence on intelligence. For question 9, being raised in extreme deprivation can severely limit access to resources, stimulation, and support crucial for intellectual development, having a clear and profound environmental impact.

Answer:

Question 8: identical twins, but not other siblings, have nearly identical intelligence test scores
Question 9: being raised in conditions of extreme deprivation