Multiple Choice
A study of the effects of the children's television program Sesame Street showed that preschoolers with the lowest initial academic skills (e.g., ability to recognize letters of the alphabet) gained more over a season of viewing than other children. The effects of the program in this study are most likely to be confounded with the effects of
A) differential attrition.
B) selection.
C) testing.
D) statistical regression.
Correct Answer:
Verified
Correct Answer:
Verified
Q46: True experimental designs control for maturation and
Q47: "Pre-experimental designs" refer to studies involving direct
Q48: Instrumentation is a threat to internal validity
Q49: _ occurs in an experiment when one
Q50: "Selection" refers to systematic differences among subjects
Q52: The absence of random assignment is common
Q53: Statistical regression may be a threat to
Q54: _ may occur when a pretest sensitizes
Q55: Use of multiple time-series can rule out
Q56: In Campbell and Ross's analysis of the