Approximately what percentage of university students have engaged in non-suicidal self-injury?
a) 5%
b) 10%
c) 14%
d) 18%
c
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Imaginary friends are psychologically unhealthy and should be discouraged
a. True b. False Indicate whether the statement is true or false
Gloria's friends have recently noticed a startling change in her behavior. She eats everything in sight but gains little, if any, weight. She speeds around the room as if she were taking amphetamines. She seems constantly tense and agitated, and has trouble sleeping. She has become impulsive and lately she seems to be upset by even the slightest stress. The source of Gloria's problems is probably an ______ gland.
a. overactive pituitary b. underactive pituitary c. overactive thyroid d. underactive thyroid
Cancers are hard to study because
A. they have long or irregular growth cycles. B. finding appropriate cell lines for conducting studies is very difficult. C. they are not affected by lifestyle or genetics. D. of the lack of funding for cancer research.
Ruling out alternative explanations for results increases the _________ validity.
Fill in the blank(s) with the appropriate word(s).