An infant over 6 months old can reach for an object in the dark even though she can't see it. This indicates that __________ may develop earlier than Piaget believed.
a. logical processes
b. conservation (knowing that matter doesn't change)
c. object permanence
d. formal operations (abstract thinking)
Answer: c. object permanence
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A number that describes a "typical score" around which other scores fall is called a measure of
a. variability. b. central tendency. c. normality. d. cohesion.
Although it is generally a good idea to avoid loaded questions in survey research, your textbook pointed out that researchers can sometimes use loaded questions to get participants to:
A) answer questions they would otherwise leave blank B) admit to engaging in behaviors that many people are reluctant to report C) use the full range of a scale -- and thus avoid floor effects D) change their attitudes about controversial issues
Intonation involves:
a. rising and falling speech patterns. b. the repetition of consonants and vowels. c. repeating what has been heard. d. babbling sounds from all possible languages.
Light that is low-amplitude and long-wave length would appear as what to a human observer?
A. Dim red B. Bright red C. Dim purple D. Bright purple