Explain how DZ and MZ twins are formed. How do twin studies help to inform the nature?nurture debate?
What will be an ideal response?
DZ twins result when the female releases two eggs instead of one and each is fertilized with a sperm. MZ twins result when a zygote is formed and it divides. MZ twins share 100% of their genotype, whereas DZ twins share approximately 40%-60% of their genetic inheritance. When MZ twins are more similar than DZ twins, this indicates that genetics play a strong role in the development of their phenotypes.
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Which pair of terms best describes Schachter and Singer's theory of emotion?
A. Arousal and physiology B. Behavior and genetics C. Arousal and context D. Nature and nurture
According to the discussion of spatial visualization, a meta-analysis of the research reported an effect size of 0.19, favoring males. From this information, you can conclude that
a. the average male performed 19% better than the average female. b. the gender difference is probably due to biological explanations. c. the gender difference is large enough to explain why more men than women select professions in engineering. d. the gender difference is small on spatial visualization tasks.
Mary took part in an experiment where she wore a special set of headphones that played different messages to each ear. The researchers asked her to repeat the message in her left ear as she listened to it. Based on the results of similar studies, it is likely that Mary will:
a. not be able to follow just one message and will often switch between the messages b. be able to easily recall both messages, even though she only attended to the message in one ear c. not be able to recall the content of either message that she is listening to d. not be able to recall the content of the message that is playing in her right ear
You are a prosecuting attorney with a strong relationship to the police force you partner with. An officer comes to you with a dilemma: his partner is about to testify about a robbery he was the arresting officer on, but he knows the partner's memory is shaky because he was going through a divorce at the time. The officer swears you to secrecy. How will you prevent the officer's partner from perjuring himself without breaking the trust of his partner?
What will be an ideal response?