If a researcher varies the loudness of music in a factory to observe its effect on the rate of productivity of the employees, the dependent variable is the

One way scientists can search for genes that are associated with rare disorders is by carrying out ________, in which they first find genetic markers, then look for inheritance patterns in large families where a particular condition is common

a. experimental studies. b. psychometric studies. c. linkage studies. d. noncoding studies.

_____ drug _____ results from the body's and brain's natural ability to protect itself against harmful substances

a) Psychological; tolerance b) Physical; dependence c) Emotional; addiction d) Physical; withdrawal