Essay on Sensation: Color and Absolute Threshold Correct

16161 Words Dec 3rd, 2011 65 Pages
3 Sensation and Perception

Key: Answer, Page, Type, Learning Objective, Level

Type
A=Applied
C=Conceptual
F=Factual
Level
(1)=Easy; (2)=Moderate; (3)=Difficult

LO=Learning Objective
SG=Used in Study Guide p=page MULTIPLE CHOICE
The ABCs of Perception

Learning Objective- 3.1 What is sensation and how does it enter the central nervous system?

1. ______ are the raw data of experience, based on the activation of certain receptors located in the various sensory organs. a) Perceptions

Incorrect. Perception is the mental process of sorting, identifying, and arranging the raw data of experience into meaningful patterns. Sensations are the raw data of experience.

b) Emotions c) Cognitions d)
…show more content…
The smallest amount of a particular stimulus required to produce any sensation at all in a person is the absolute threshold. Below that level the stimulus cannot be detected reliably. b) minimum threshold
Incorrect. The smallest amount of a stimulus required to produce any sensation at all in a person is the absolute threshold. The term minimum would seem to be correct, but it is not used. c) difference threshold d) noticeable threshold

ANS: a, p. 85, F, LO=3.1, (1)

9. The difference threshold is defined as the degree of change in a stimulus level that is required in order for a person to detect a change _____ of the time. a) 25 percent b) 75 percent

Incorrect. The difference threshold is defined as the degree of change in a stimulus level that is required in order for a person to detect it 50 percent of the time.

c) 50 percent

Correct. The difference threshold is defined as the degree of change in a stimulus level that is required in order for a person to detect it 50 percent of the time.

d) 100 percent

ANS: c, p. 84, F, LO=3.1, (3)

10. The lowest stimulus intensity required for detection is the ______ and the smallest noticeable difference between a standard stimulus intensity and another stimulus value is the ______. a) absolute threshold; difference threshold
Correct. The lowest stimulus intensity required for detection is the absolute threshold, and the smallest noticeable difference between a