One preventive step researchers can take when they suspect selective subject loss might occur in their experiment involves using a pretest to screen out participants who may drop out of the study. The disadvantage of this method is decreased
A. external validity.
B. internal validity.
C. statistical significance.
D. all of these
A. external validity.
You might also like to view...
Antidepressant drugs generally work by increasing the activity of the neurotransmitters norepinephrine and serotonin
a. true b. false
Research indicates that African American children growing up in households headed by a grandmother are particularly well adjusted
Indicate whether the statement is true or false.
According to Erikson's life stages, what is the central crisis of young adulthood?
a. intimacy vs. isolation b. generativity vs. stagnation c. ego identity vs. role confusion d. ego integrity vs. despair
At the Rise and Shine preschool, Maggie, Elaine, and Tony were playing in the "dress-up" corner. Maggie said, "I'm the mommy and I'm making you both a good dinner." Elaine said, "I'm not your child, I'm a famous movie star, and I'm getting an award." Tony said, "I'm a fireman, and I was called to save a cat stuck in a tree." The children appear to be occupied in what type of play?
A) Associative B) Cooperative C) Parallel D) Unoccupied