_____ Children often exhibit increases in the variability of their strategy use during periods of rapid changes in thinking
Indicate whether the statement is true or false
T
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The statistic in which the differences from the mean are squared (to eliminate negative numbers) before they are added together and divided by their total number is called the
a. standard deviation. b. mean deviations. c. median. d. variance.
More than half of both males and females report having had sex by grade __________.
A. 9 B. 10 C. 11 D. 12
Regarding the practice of safe sex, which of the following statements is FALSE?
a. Sexually active persons should practice safe sex until their partner's sexual history and/or health has been clearly established. b. Rates for many STDs are rising among gay men due, in part, to the fact that new medical treatments are helping people with HIV live longer and not look sick. c. Drinking alcohol has not been shown to increase the likelihood of taking sexual risks. d. A study of heterosexual adults also found that the majority did not practice safe sex with their last partner.
Lithium carbonate is effective in treating
a. dissociative disorder. b. schizophrenia. c. general anxiety. d. bipolar disorder. e. antisocial personality disorder.