What have twin studies told us about sexual orientation?
a) They are clear in supporting that sexual orientation is influenced only by genetic factors.
b) They clearly do not support the idea that sexual orientation is influenced by genetics.
c) Although supporting a genetic influence on sexual orientation, they do not rule out environmental
d) Twin studies have not been done in the matter of sexual orientation.
c
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By what age are babies first able to grasp an object with the thumb and fingers?
A. 10 months B. 8 months C. 6 months D. 4 months
Having this allows for good estimates of the sampling errors using the pooled variance term.
A. homogeneity of variances B. equal variance C. the assumption of normality D. the population of difference scores
Meta-analysis results indicate that objective and subjective measures of performance:
a. are slightly correlated (r = .39) b. are highly correlated (r = .80) c. are not correlated (r = .02) d. can never be correlated
Which of the following statements about panic disorder diagnosis is false?
A. Panic attacks should be predictable B. Panic attacks should be recurrent C. Panic attacks are discrete episodes of intense fear or discomfort D. Panic attacks should reach a crescendo within a few minutes