Why do many researchers recommend limiting rating scales to seven response options?
a. superstition
b. short-term memory holds only about seven pieces of information
c. respondents can only distinguish among seven levels
d. validity decreases with more than seven options
e. Likert initially recommended 7-point scales
b. short-term memory holds only about seven pieces of information
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Which of the following areas has the densest arrangement of touch receptors in the somatosensory cortex?
A. lower back B. right calf C. lips D. top of right foot E. left hip
As an addiction develops, many of its effects, especially the enjoyable effects, decrease, a phenomenon known as____.
A. tolerance B. craving C. withdrawal D. abstinence
____________________ is usually perceived as a child's underlying competence or learning ability, whereas ____________________ involves a child's acquired competencies or performance
Fill in the blank(s) with correct word
In pregnant women, cocaine restricts placental blood flow and oxygen supply to the fetus. Research suggests that the brain systems most damaged by cocaine are those responsible for
a. motor development. b. speech. c. controlling attention. d. vision.