Jackie is always buying several packs of baseball cards, but only a fraction of those packs actually add new cards to her collection. She is likely on a __________
a) fixed-ratio.
b) variable-ratio.
c) fixed-interval.
d) variable-interval.
b
Psychology
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The sleep spindles that occur during stage 2 sleep are important for what?
a. Dreaming b. Inhibiting movement of major postural muscles during dreaming c. Suppressing activity of the sense organs d. Storing and improving memory
Psychology
Which type of therapy is based on principles of learning?
a. cognitive b. client-centered c. behavior modification d. personality
Psychology
Which process gives organisms the flexibility to survive in a changing world?
a. ?learning b. ?instincts c. ?reflexes d. ?variable action patterns
Psychology
During adolescence, negative crisis resolution results in the continuance of a sense of:
a. ego despair b. role confusion c. guilt d. shame and doubt
Psychology