Children normally begin to say their first word and make connections between words and objects at about __________ months

Groups in which members who find membership in the group attractive and members are strongly identified with a group have a great deal of cohesiveness

Indicate whether the statement is true or false.

What is cardiac vagal tone?

A) The variability or patterning of heart beats over time. B) Heart rate frequency, or the number of beats per minute. C) A competency that is more reflective of cardiovascular functioning than nervous system integrity. D) A measure that assesses the impact of the cardiovascular system on nervous system development.