A researcher who believes in a certain theory may unintentionally ...

[tth]

A researcher who believes in a certain theory may unintentionally record behaviors that provide support for the theory. This effect is called
 
  a. observer bias.
  b. observer drift.
  c. behavioral checking.
  d. theoretical reactivity.

Question 2

If a researcher set up a video camera to record behavior so that at random times, the camera began recording for one minute, the investigator could later see whether behavior of interest occurred during the recorded intervals.
 
  This approach to data collection would involve
  a. cluster sampling.
  b. continuous real-time sampling.
  c. time-interval sampling.
  d. time-point sampling.

[nixon_s]

Answer to Question 1

a

Answer to Question 2

c