What deficiency is experienced by the majority of children under age 5 in developing countries and leads to fatigue, irritability, and difficulty sustaining attention?
A. iron
B. calcium
C. phosphorus
D. beta-carotene
Answer: A
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One important reason that research on infant cognitive abilities is difficult to conduct is that
a. infants do not have measurable memory skills until 6 months of age, so we cannot assess other cognitive abilities that depend on memory. b. infants under the age of 3 months are too young to participate in research. c. it's difficult to assess cognitive processes because of infants' limited motor and language skills. d. psychologists have typically concentrated on perceptual abilities, rather than cognitive abilities.
According to your text, most psychologists agree that a definition of intelligence is least likely to include the ability to ____.?
a. ?acquire knowledge b. ?think abstractly and problem-solve c. ?perform well on standardized tests of intelligence d. ?reason adaptively in different environments
Each of the following is true of eyewitness testimony EXCEPT it ______
a. is unreliable b. can be affected by what the witness imagined c. is not essential in most criminal cases d. is vulnerable to distortions based on suggestions the witness receives after the event
Male puberty usually begins with
A) extreme and unpredictable moodiness. B) the enlargement of the testes. C) the appearance of pubic hair. D) spermarche.