The average age at which adolescents have sexual intercourse for the first time is __________, and __________ have had sex before the age of 20
a) increasing; 25 percent
b) declining; 50 percent
c) declining; 75 percent
d) increasing; 40 percent
Answer: c
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The Centers for Disease Control are concerned with prematurity and low birth weight because these factors ______.
A. are easily controlled with education B. are easily influenced with medical intervention C. account for about a third of mortality cases in infancy D. present the number one infancy issue worldwide
_____ is the extent to which an assessment technique measures what it claims to measure.
A. Validity B. Test-retest reliability C. Clinical utility D. Interrater reliability
The consumption of alcohol, as well as the ingestion of antianxiety drugs, both work to increase the activity of _____, which is an inhibitory neurotransmitter
A) GABA B) serotonin C) acetylcholine D) dopamine
Sarah has learned to ignore her parents the first few times they tell her that it's bedtime. James has learned to respond to his parents the first time they mention bedtime
Both sets of parents punish their children for disobedience, but James parents tend to punish much more quickly than do Sarah's parents. The difference between Sarah's and James' responses to their parents is probably due to __________ a) the temporal relationship between the conditioned stimulus and the unconditioned stimulus. b) the intensity of the unconditioned stimulus. c) the number of pairings of the conditioned stimulus and the unconditioned stimulus. d) the intensity of the conditioned stimulus.