Fillers are words or phrases used to add meaning to a comment

Development of the embryo and fetus is characterized as cephalocaudal because

a. the end of the neural tube that becomes the brain differentiates before the lumbar spinal cord and its peripheral nerves b. stem cells that will become neurons migrate to the head region before any migrate to the lower spinal region c. the term describes the direction of differentiation and development, which is from the head down d. stem cells that will become neurons migrate along the spinal cord, moving from the head end of the embryo to the caudal end

A contemporary approach that connects personality psychology to behaviorism assesses personality by looking at how often a person performs certain observable behaviors. This is called the __________ approach

Fill in the blank(s) with correct word