This procedure consisted of drilling two holes in either side of the skull and inserting an instrument resembling an ice pick into the brain tissue to cut or destroy nerve fibers.

Psychologists argue that ________ is the first concrete indicator of the start of adolescence

a. the development of an integrated identity b. attachment c. puberty d. the pubescent growth spurt e. graduating from elementary school

Dr. Kermit is interested in studying whether the readers on Reading Rainbow cause higher student reading scores than the readers on Avocado Alley. To answer his question, Dr. Kermit should use which research method??

a. ?naturalistic observation b. ?case study c. ?survey d. ?experiment