Hyperactive children can be taught to use self-directed speech to increase their self-control

The standard deviation is an average that is calculated by adding up a set of quantities and dividing the sum by the total number of quantities in the set

Indicate whether this statement is true or false.

Which of the following is a suggested treatment for insomnia?

A) Consume caffeine if planning to stay up late. B) Remain in bed until you are able to fall asleep no matter how long it takes. C) Hide clocks to avoid becoming preoccupied with how long it is taking to fall sleep. D) Use an alarm clock to wake up in the morning.