Fraternal twins are created when
a. a fertilized egg divides into two clusters of cells.
b. two egg cells are fertilized by the same sperm cell.
c. two different eggs are released and fertilized.
d. one egg cell is fertilized by two different sperm cells.
c. two different eggs are released and fertilized.
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If individuals are coerced into participating in a research study, then the principle of informed consent is being violated
a. True b. False Indicate whether the statement is true or false
At a minimum, how many participants would be needed for a matched-subjects design comparing three different treatment conditions with 20 scores in each treatment?
a. 20 b. 60 c. 90 d. 120
Sarah has violent aggressive impulses. Rather than express them directly, she gets a job dismantling wrecked cars. This is an example of
a. sublimation. b. regression. c. projection. d. rationalization.
Who proposed that humans' main source of pleasure satisfaction is in erogenous zones?
a. Vygotsky c. Erikson b. Freud d. Brofenbrenner