All of the following statements about the genetic basis of schizophrenia are true EXCEPT that
A) adoption studies indicate a biological basis for schizophrenia.
B) the concordance rate for schizophrenia is higher for monozygotic than for dizygotic twins.
C) a person with a "schizophrenia gene" will always develop schizophrenia.
D) several genes may be involved in schizophrenia.
E) genes impart a susceptibility to develop schizophrenia.
Answer: C
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Psychoanalytic theory consists of which regions of the mind?
a) only the ego and superego b) the id, ego, and superego c) the ego, libido, and superego d) the id, libido, and superego
Before beginning a study on the health effects of obesity, a group of researchers agree that, for the purposes of their research, anyone with a Body Mass Index greater than 30 kg/m² will be considered obese. This is an example of _______________
A) a confounding variable B) an operational definition C) convenience sampling D) an appeal to common sense