______ is a problem for field studies.
a.Demand characteristics
b.Low internal validity
c.Low external validity
d.Experimenter effects
CORRECT = B
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According to Piaget, children in the concrete operations stage have difficulties with what?
a. The concept of object permanence b. The distinction between appearance and reality c. Hypothetical or abstract ideas d. Conservation of number
Surveys often reveal that beliefs about the elderly are:
a. simplistic b. harmless c. inaccurate d. not stereotypic
Agata suffered from persistent diarrhea in early childhood. As a result, during her school years, Agata is probably __________ than her agemates who were not stricken with persistent diarrhea
A) heavier in weight B) shorter in height C) better nourished D) more attentive
Name Piaget's first stage in cognitive development in which infants learn through senses and motor activity.
Fill in the blank(s) with the appropriate word(s).