Why is it important to examine interaction effects before main effects in a 2 x 2 multifactorial designs?
What will be an ideal response?
Ans: Varies.
Interactions tell us whether the effects of an independent variable depend on the level of the other independent variable in a 2 ? 2 multifactorial design. It can be tempting to interpret main effects first; however, an interpretation of main effects before understanding any significant interactions can be highly misleading. Main effects alone may tell a story about the relation between variables that is different from the pattern that is revealed when an interaction is considered.
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Which of the following statements is true of the demonological model that explains the origins of psychological disorders?
A) Health professionals viewed psychological disorders as diseases of the mind that had no cure. B) Health professionals viewed psychological disorders in terms of a combination of biological vulnerabilities, psychological factors, and sociocultural factors. C) People assumed that the behaviors associated with psychological disorders were caused by possession by the Devil. D) People assumed that illnesses had physical or biological causes, which could be identified and cured through therapies.
Natural selection is based on
a. individual variation in inherited characteristics and reproduction. b. competition between individuals. c. an unchanging environment. d. the creation of new species. e. the variability in breeding patterns.
The normal curve reaches the horizontal axis in 4 standard deviations above and below the mean
Indicate whether the statement is true or false
Changes in physical functioning that are due to illness, health habits, and other individual differences, but which are not due to increased age itself and are not inevitable, are called __________ aging
a) primary b) secondary c) outward d) inward