Karen exposed some children to a video to see how their behavior changed after watching the video. There was also a control group of children who did not watch the video but were tested afterwards just like the other group. In Karen’s experiment, the ________ was watching the video
a. independent variable
b. longitudinal design
c. dependent variable
d. cohort effect
Answer: a. independent variable
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Three-year-old-Joshua spits out his broccoli, scrunches his face and shouts, “Yuck!” His mother can’t understand why he has such a distaste for broccoli, because she finds it to be rather bland. Why might Joshua and his mother have such different reactions to the taste of broccoli??
a. ?As we get older, the overall number of taste buds decreases. b. ?The orbitofrontal cortex loses a significant number of neurons as we age. c. ?Myelinated axons connecting to the medulla become unmyelinated as we age. d. ?Hyperstimulation of taste buds in young children may produce the sensation of burning.
The path of a sound wave, as it enters the human ear, is:
a. from the eardrum, to the auditory canal, and through the middle ear b. from the auditory canal, through the middle ear, to the eardrum c. from the auditory canal, to the eardrum, and through the middle ear d. from the middle ear, to the eardrum, and through the auditory canal
In Great Britain, improved retention rates and drastic reduction in unfilled positions was a positive outcome of:
Racial inequities in conviction and sentencing are reflect by the fact that
A) African Americans are over-represented on death row. B) European Americans are more likely to be serial killers. C) female prisoners now outnumber male prisoners. D) Mexican Americans outnumber African Americans in prison. E) the death penalty is not carried out very frequently.