If the research prediction is that the treatment will decrease scores, then the critical region for a directional test will be in the left-hand tail

Action potentials originate at the

A) terminal buttons. B) synapses. C) axon initial segment, adjacent to the axon hillock D) nodes of Ranvier. E) nucleus.

In a research study by Jeng (2000), the median age at which VLBW infants began to walk was:

a. the same as full-term infants. c. two months later than full-term infants. b. two months earlier than full-term infants. d. four months later than full-term infants.