The confounding effects of poorly conceived and executed independent variables can be eliminated through a random assignment of subjects to conditions.
Answer the following statement true (T) or false (F)
False
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Studies in which Inhelder and Piaget's classic tasks are administered to people of a variety of ages and backgrounds indicate that formal operational reasoning is found __________.
A. consistently after age 15 to 16 (10th grade) B. among the majority of adults but not teenagers C. mainly in areas in which a person has developed considerable expertise D. only among highly trained scientists and philosophers
Bruce has problems hearing the difference between "ba, da, and pa." An outcome described in the textbook of Bruce's problems might be:
A. an attached stigma B. frustration in social situations C. problems with the visual perception of words with those letters D. difficulties hearing the differences between words with those sounds
What personality trait is associated with cooperation and sympathy and is positively correlated with helping.
A. neuroticism B. extroversion C. openness to experience D. agreeableness
According to the article Zipping Up the Genes about twins reared apart, variance in scientific studies is
likely to be the result of differences between individuals studied and (a) error in measurement (b) careful control of studies (c) statistical analysis (d) all of these--a, b, and c--are correct