312 Ch. 2 Day 1

What's the difference between Weber's Law and Fechner's Law

• Weber's Law is more complex

• Fechner's Law takes into account how intensity impacts perception

• Weber's Law takes into account how intensity impacts perception

• Fechner's Law argues for a constant ratio between the stimulus and perceived intensity.

You want to know at what point, someone switches from saying "That's green!" to "That's blue!" What are you testing?

• Absolute Threshold

• Just Noticeable Difference

What is the difference between the Method of Limits and the Method of Adjustment?

• Who is controlling the stimulus intensity

• Whether the stimulus intensity is increasing or decreasing

• Whether the intensity slowly increases/decreases or is random

• The numbers people use to rate their perceptions

Imagine that you are an airport security guard and you need to scan luggage to check for weapons and other prohibited items. If you see a weapon on the scanner screen, and then a weapon IS found when the back is searched, you have made a _______ according to signal detection theory.

• Hit

• Miss

• Correct Rejection

• False Alarm

Imagine that you are an airport security guard and you need to scan luggage to check for weapons and other prohibited items.

If you DO NOT see a weapon on the scanner screen, and then a weapon IS found when the back is searched, you have made a _______ according to signal detection theory.

• Hit

• Miss

• Correct Rejection

• False Alarm

What is the signal in this example?