As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group B will sleep in total darkness, and Group C will sleep in their usual environment. Alertness, blood pressure, respiration rate, and muscle tension will be sampled in the morning and evening. Carl is studying:

Question

As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group B will sleep in total darkness, and Group C will sleep in their usual environment. Alertness, blood pressure, respiration rate, and muscle tension will be sampled in the morning and evening. Carl is studying:

a. light perception.

b. the relationship between mood and sleep.

c. gerontology.

d. psychophysics.

I think it is either a or d.

Answer 1

If you don't know the right answer, try to elimination the wrong ones.

Are sleeping persons really perceiving light?

Is Carl only covering older people?

Is Carl exploring stimuli and their perceptions?

Why would Carl be concerned with sampled measures?