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

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Definitions:

Zygote

The initial cell formed when two gamete cells are joined by means of sexual reproduction, representing the earliest developmental stage of the embryo.

Teratogens

Any agent that can cause developmental malformations (birth defects) in an embryo or fetus.

Prenatal

Pertaining to the period before birth, from conception to the onset of labor.

Newborns

Infants in their first few hours to weeks of life, particularly before they are one month old, encompassing the very early stages of development.