Describe the fundamental flaw that prevents a nonequivalent group design from being a true experiment. (That is, why can't these designs produce an unambiguous cause-and-effect explanation?) Explain how the pretest scores in a pretest-posttest nonequivalent control group design help reduce this problem
What will be an ideal response?
The basic flaw with a nonequivalent group design is that there is no assurance that the different groups in the study were equivalent before the treatments were administered. As a result, there are always two possible explanations for any differences that may be found between treatments: the differences may be caused by the treatments or the differences may have existed before the treatments were introduced. This problem is reduced by the pretest measurements in a pretest-posttest nonequivalent control group design. If the two groups have similar pretest scores, then you have some assurance that the two groups are equivalent, at least for the variable being measured.
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If one of our variables is a dichotomy, the correlation we compute is
a. Spearman's rS. b. a rank correlation. c. a point-biserial correlation. d. a tetrachoric correlation.
The term lateralization refers to
a. divisions of the brain into hindbrain, midbrain, and forebrain. b. the division of functions between the right and left hemispheres. c. the cross-wiring of the brain. d. the connections between Broca's area and Wernicke's area. e. the observation that split-brain patients have trouble naming objects that they touch but do not see.
The way to combine record keeping and A, B, and C elements in a single plan is: a. Think about All possible solutions, Brainstorm creatively, Conclude the best plan. b. Use Antecedents to create Behavior Change, while continually keeping records. c. Shift or avoid Antecedents, shape new Behaviors, and arrange Consequences that willchange your behavior, while continually keeping records
d. Ask Boys to Cuddle.
How would you evaluate Vygotsky's contributions to the understanding of cognitive development?
What will be an ideal response?