According to the authors, it is not easy to understand and explain other people's behaviour because
A) other people work to hide their motivations and intentions.
B) we only have access to observable behaviours.
C) we are biased by our own motivations.
D) social behaviour is often random.
E) social behaviour is often performed without conscious awareness.
Answer: B) we only have access to observable behaviours.
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When designing a cross-sectional study with different age groups, a researcher is concerned
that cohort differences may influence his study results. To ease his mind, he ensures that the oldest participants ( age 80 ) are similar in intelligence, education, and social class to the younger participants. What is the researcher's primary concern? A) The older participants may not be representative of the same-aged people in the community. B) He relied on a nonprobability or convenience sample. C) It is very difficult to measure intelligence in older people. D) He should not have relied on a chain sampling method.
In the study by Rushton and Bons ( 2005), what methodological strategy did they
implement to try to compensate for the effects of subject attrition? A) used the mode to replace missing data points B) mailed a follow-up questionnaire to the co-twins who had not responded C) mailed a follow-up questionnaire to every participant, in order to repeat the study over D) re-designed the study to include only monozygotic twins in the sample