Author Question: Imagine a study where participants were given Jell-O shots to consume before participating in ... (Read 21 times)

charchew · **on:** Jul 13, 2018

Imagine a study where participants were given Jell-O shots to consume before participating in experiments where reaction time was measured. However, to the participants' surprise, the Jell-O shots were not made with alcohol.

When the participants were debriefed and told that the Jell-O contained no alcohol, some participants refused to drive home until they had sobered up. The participants' responses indicate that __________ was a threat to internal validity.

a. diffusion of treatments
b. instrumentation
c. placebo effect
d. demand characteristics

Question 2

When your professor keeps track of your daily attendance in class, it is a type of physiological measure.

Indicate whether the statement is true or false