Within the human embryo, activity related to the development of hair and nails is centered in the ____________?

A. Binet
B. Skinner
C. Guilford
D. Wechsler

A. Gestaltists
B. Phenomenologists
C. Cognitivists
D. Transactionalist

A. glucose absorption
B. emotions
C. metabolism
D. sexuality

A. Cannon
B. Beach
C. Ingram
D. Anderson
E. None of these

A. Stimulus Threshold
B. Response Threshold
C. Hypothesis
D. Problem

A. concrete operations
B. formal operations
C. primary and secondary circular reactions
D. conservation