The mean equals 55. One individual scores at the 39th percentile and has a raw score of 42. What is the standard deviation?

Claudia, a preschooler, resists going to bed every night and usually wakes up a few times at night. Which of the following should her parents do to ensure that she is able to get a sound sleep?

A. They should switch off all the lights in her room when putting her to bed. B. They should allow her to watch her favorite cartoon just before bedtime. C. They should make her eat a heavy meal just before bedtime. D. They should allow her to sleep with her favorite doll and her favorite blanket.

___ is the neurotransmitter associated with higher-level cognitive functioning like inhibiting thoughts, attention, and planning

A : Estrogen B : Insulin C : Cytosine D : Dopamine