Which of the following is a practice that requires children to sit still in a designated place for a period of time in an effort to reduce undesired behaviors?

Bad things happen to bad people and good things happen to good people, according to the ______

a. just-world hypothesis b. Premack principle c. Peter principle d. reciprocity model

The valleys of the sound waves are referred to as

a. depressions. b. timbres. c. compressions. d. rarefactions.