L-M colour opponency originates in:

From the mid-1980s to the present, much I/O research has been focused on:

A) the human condition. B) scientific management. C) matching military recruits to jobs. D) cognitive frameworks and processes.

Mr. Marshall hired June to collect data from a group of subjects. Neither June nor the subjects were aware of the independent variable that Mr. Marshall had manipulated. This is an example of _______

a. randomization b. a placebo c. double-blind control d. experimenter bias