The charge that a neuron at rest maintains is due to the presence of a high number of _________ charged ions inside the neuron's membrane

Use of infant-directed speech _______________________

a. is less common outside the developed countries b. leads to slower development of language than the style of language typically spoken with adults c. involves speaking in a lower than normal tone and using less repetition than in normal speech d. has been shown to be less interesting to babies than normal speech; a reason why many parents do not use this type of "baby talk"

People join groups and seek out group affiliation for a number of reasons. Which of the following is not a reason people seek to join groups?

A) Social comparison B) When conditions are threatening or uncertain C) Psychological security D) Independence E) Emotional connection