Which of the following events occurs during the fourth stage of sleep?
A) Brain waves are punctuated by sleep spindles.
B) Brain waves slowdown from the alpha rhythm and enter a pattern of theta waves.
C) The delta waves slow to about 0.5 to 2 cycles per second, and their amplitude is greatest.
D) The delta waves have a frequency of 5 to 7 cycles per second.
Ans: C) The delta waves slow to about 0.5 to 2 cycles per second, and their amplitude is greatest.
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Relative to other causes of death, unintentional injuries ______ in rank across the adult lifespan.
A. decrease B. decrease, then increase C. increase D. remain constant
The basic sounds of the English language are called
a. phonemes. c. syllables. b. vowels. d. words.
With extensive training, dolphins and parrots can acquire a vocabulary and respond to short, novel sentences,
A) although they do so less consistently than a preschool child. B) but only chimps can be taught to produce strings of three or more symbols that conform to a rule-based structure. C) showing that they follow the same grammatical rules as humans in their own "language." D) and are highly attuned to recognize human intentions that motivate use of language.
Which model of successful aging was developed by Paul and Margret Baltes and focuses on the assumption that late adulthood brings changes and losses in underlying capabilities that vary from person to person?
a) Continuity theory b) Activity theory c) Selective optimization with compensation d) Compensational theory