Aaron Anderson Studies Reaction Time by Having Participants Press the Space-Bar

question 4

Multiple Choice

Aaron Anderson studies reaction time by having participants press the space-bar on a keyboard as soon as they notice a specific word flash on a computer screen.Throughout the experiment,Aaron must carry out diagnostics and repairs to keep his equipment in working order because repetitive use makes the keyboard less sensitive and the accumulation of experimental data slows down the computer's processing speed.What threat to internal validity is Aaron contending with?

• A)Instrumentation
• B)Mortality
• C)Maturation
• D)Testing effects
• E)Diffusion of treatment