Chapter 3

Question 1

What are the three different types of studies in HFE

Answer 1

1. Descriptive studies (Undertsand a pattern, trend or characteristic
2. Experimental studies
3. Evaluation Studies

Question 2

Reliability

Answer 2

consistency or stability of a measure over time.

Example: a student taking the sat should recieve a similkar score every time they take it.

Question 3

Validity

Answer 3

Does the instrument measure what it intends to measure.

Question 4

face validity

Answer 4

asking an expert id a measure is valid.

Question 5

content validity

Answer 5

A measure must include all aspects that we want to measure. including a selection test that incorporates different things is content validity.

Question 6

construct validity

Answer 6

if a meausre addresses an underlying construct or theory

Question 7

Yerkes Dodsons law

Answer 7

peak performance with an increased level of arousal or stress, but too much/too little of it and result in poor performance

Question 8

sensitivity

Answer 8

sensitivity measures the different levels of independent variables. I.E a study on driving, driving on freeway, , entering free way, exiting freeway.