Suppose, in an investigation, the frequency of positive hits was twice that of false
alarms. The correlation coefficient would be
(a) +1.0 (b) 0 (c) -1.0
(d) not enough information is given to answer the question
D
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A sexually healthy person is defined as someone who
a. feels comfortable with his or her sexuality b. feels free to choose whether or not he or she wishes to try a variety of sexual behaviors c. is free from life-threatening diseases d. all of the above
Which of the following statements regarding the progression and prognosis of childhoodonset is supported by research?
a. Although the symptoms of childhood-onset schizophrenia may go into remission for periods of time, the disorder is often chronic in nature. b. Symptoms that develop and progress slowly over a long period of time suggest a more favorable prognosis than symptoms that appear suddenly. c. Children who show symptoms such as social withdrawal and affective flattening prior to showing evidence of delusions or hallucinations have a more favorable prognosis than children whose first symptoms include delusions and/or hallucinations. d. Individuals who first develop symptoms in childhood, as compared to adolescence, tend to adapt better to the disorder and are more likely to have long periods of remission later in life. e. Most individuals with childhood-onset schizophrenia are able to learn and master the life skills needed to live independent, productive lives.
The most common of the identified chromosomal causes of Down syndrome is:
A) trisomy 21. B) mosaicism. C) translocation. D) PKU.
The drug LSD can cause a person to see sounds and hear images.
a. true b. false