Identical Twins Show a Close Resemblance in IQ-Test Performance

question 36

Essay

Identical twins show a close resemblance in IQ-test performance (+.86), whereas the resemblance in IQ among fraternal twins is moderate (+.60). Are these findings consistent with the behavioral genetic proposition that shared environmental influences contribute very little to the development of personality? Explain.

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Definitions:

Autobiographical Memory Studies

Research focused on memory for events and experiences from one's own life, often structured in a narrative form.

Memory For Actions

The ability to remember and perform tasks or actions, often referred to as procedural or implicit memory.

Autobiographical Memory

A type of memory system consisting of episodes recollected from an individual's life, based on a combination of episodic (personal experiences and specific objects, people, and events experienced at particular time and place) and semantic (general knowledge and facts about the world) memory.

First Autobiographical Memories

The earliest memories that individuals can recall about their own life, typically from early childhood.