Classical psychophysicists placed a great deal of emphasis on ...

[mckennatimberlake]

Classical psychophysicists placed a great deal of emphasis on determining the absolute threshold for a particular type of sensory stimulation. This proved to be difficult because
 
  a. the point at which an observer detects a stimulus varies from trial to trial.
  b. adequate technical equipment for measuring intensity was not available until recently.
  c. subjects must be carefully trained to make these judgments accurately.
  d. researchers used samples too small to give reliable results.

Question 2

A matched-subjects design attempts to eliminate the problems associated with ____ that are a concern for between-subjects designs and also eliminate the problems associated with ____ that are a concern for within-subjects designs.
 
  a. order effects; order effects
 b. order effects; individual differences
 c. individual differences; individual differences
  d. individual differences; order effects

[T4T]

Answer to Question 1

A

Answer to Question 2

d

[mckennatimberlake]

Thanks for the timely response, appreciate it

[chereeb]

Gracias!