Twin Studies

question 107

Multiple Choice

Twin studies

• A) cannot be used to study polygenic traits such as intelligence.
• B) are based on the assumption that monozygotic twins are not more similar genetically than dizygotic twins.
• C) are based on the assumption that heredity influences a trait if identical twins are more alike than fraternal twins.
• D) often underestimate the influence of heredity because identical twins may have more similar environments than fraternal twins.

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Definitions:

Required Return

The lowest percentage of return per annum that draws in companies or individuals to invest in a particular security or project.

IRR

Internal rate of return; a financial metric used to assess the profitability of investments by calculating the rate of return where net present value of all cash flows (both positive and negative) from a project equals zero.

Project

A temporary endeavor undertaken to create a unique product, service, or result.

Payback Criterion

A capital budgeting method that measures the time required to recoup the initial investment in a project.