For an independent-groups t test, the value of Cohen's d describes:
a. the size of the treatment effect.
b. the chance of a Type I error.
c. the chance of a Type II error.
d. the overall chance level in the experiment.
a
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Unlike Piaget's theory of cognitive development, Vygotsky emphasizes that
a. cognitive development is a universal process that unfolds in largely the same way for most individuals. b. social interactions and culture strongly influence the cognitive development of a child. c. language does not play a crucial role in cognitive development. d. a child's active exploration of the world strongly influences cognitive development.
Training to improve the sensitivity of parents
a. is doomed to fail because caregiving is genetically predisposed via the genotype. b. works, and it promotes secure attachment. c. is directed mainly to upper-income parents. d. yields temporary gains that are lost within weeks.
Learning to avoid engaging in behaviors that will result in punishment is called ________ training
a. reconditioning b. aversive c. avoidance d. modeling
Which of the following is NOT present in the preoperational stage?
a. the ability to reverse thoughts or operations b. egocentric thought c. the ability to think symbolically d. the tendency to confuse words with the objects they represent