Why is instrumentation a potential threat to validity in a time-series design?
A) When participants take the same measures over and over again, they tend to get "better" at them.
B) When people initiate new approaches or programs, there also may be accompanying changes in the way records are made and kept.
C) The more times something is measured, the less reliable it is.
D) When a study is carried out over a long period of time, participants tend to drop out or leave.
Answer: B
You might also like to view...
The _____ was adopted on July 4, 1776 and most of the document was written by Thomas Jefferson
A) Mayflower Compact B) Bill of Rights C) Declaration of Independence D) Fundamental Orders of Connecticut E) Pennsylvania Charter of Privileges
Which of the following is a major difficulty in measuring program effectiveness?
A. determining the appropriate time span over which to measure B. determining the population and factors affecting the population that need to be taken into account during the measurement process C. determining the succession plan D. determining whether there are people who are willing to conduct the evaluation
When data are collected on the entire population, this type of study is referred to as
A. A sample B. A census C. A survey D. An inference
When an observer immerses himself or herself in a group for a long time, gradually establishing trust and experiencing the social world as do the participants, the observer is engaging in the process of ______.
A. netnography B. ethnography C. systematic observation D. intensive interviewing