pia-arachnoid n. the inner two coverings of the brain and s...
scientific explanation an account of an event, behavior, or...
reinforcer n. a stimulus or circumstance that produces rein...
Piagetian theory the theory proposed by Jean Piaget that a...
alloparenting n. care of infants by individuals who are not...
incoherence n. inability to express oneself in a clear and...