Which of the following is true about the original research that outlined a causal relationship between vaccines and autism?
A) The original sample was representative of the greater population.
B) Participants were randomly assigned to control and experimental groups.
C) The researchers were “blind” to the study and its intent.
D) The original study had a very small sample size.
Answer: D
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In what way does the language an infant hears affect the infant's babbling sounds? a. The speech an infant hears in the first month of life determines the amount of babbling. b. Each day, the infant babbles as much time as he or she hears adults talk
c. Infants respond to a parent's words by babbling the same number of syllables. d. By age one year, infants mostly babble the kinds of sounds they have heard.
According to DeLoache (2010), how is representational insight defined?
A. The knowledge that an entity can stand for something other than itself. B. The knowledge that an entity is truly what it actually is. C. The knowledge that an entity has the ability to change your idea. D. The lack of knowledge that will be eventually acquired throughout development.
Which function is NOT one associated with catecholamines?
A) increasing sympathetic nervous system activity B) increasing parasympathetic nervous system activity C) increasing heart rate D) increasing respiration
A study examining the relationship between humor and memory compares memory performance scores for one group presented with humorous sentences and a second group presented with nonhumorous sentences. The participants presented with the humorous sentences are all males. The participants presented with the nonhumorous sentences are all females. In this study, gender (male/female) is best
characterized as a(n) ____ variable. a. independent b. dependent c. extraneous d. confounding