Which of the following is true of young children's language learning?
a. Talking to children in the first month of life accelerates their language progress
b. Young children start speaking earlier than they start understanding others' speech.
c. Young children's speech consists entirely of memorizing phrases and repeating them.
d. Even very young children appear to be applying rules of grammar.
d
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Voluntary motor movements require myelination of the neurons
a. in the cerebral cortex. b. in the medulla. c. of the motor pathways. d. in the cerebrum.
Rosie participates in a study assessing the effectiveness of a drug to treat osteoporosis. Throughout the study, neither Rosie nor the person administering the dosage knows whether she was getting the real medication or a placebo. Rosie is participating in a ____
a. blind design study c. field study b. correlational study d. double-blind design study
Professor Scott conducts research on teenage risk-taking behavior. He would like to develop a hypothesis on the parental influence on teenage risk-taking at the extreme end of the spectrum, with a focus on teenagers who sail around the world alone. Would a case study be an appropriate first step, and why or why not?
a. Yes, because Professor Scott already knows that parents are the driving influence behind teenage circumnavigation. b. No, because it will not generate a sufficient amount of data to be tested statistically. c. Yes, because teenage circumnavigators are rare and the data will help generate new, or possibly falsify existing, hypotheses. d. No, because case studies are too idiosyncratic and lack scientific rigor.
Debbie will readily carry on conversations with her family and close friends, but she becomes shy and awkward whenever she meets a stranger. Debbie's reaction is best explained by
a. a situational cause of shyness. b. private self-consciousness. c. a lack of social skills. d. Debbie being wrapped up in her own feelings and thoughts.