Rovee-Collier and her colleagues (1993) tied one end of a ribbon to a brightly colored mobile and tied the other end ties to an infant's ankle. What did these studies measure?

a. Object permanence
b. Habituation
c. Memory
d. The age of onset of primary circular reactions

Psychology

After a single sperm fuses with the oocyte, the oocyte deploys ______ mechanisms to prevent polysperm.

a) 1 b) 2 c) 3 d) 4

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Psychology

The small gap between adjacent neurons is the

a. glia. b. myelin sheath. c. synaptic cleft. d. terminal.

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Psychology