PED 437 QUIZ #6

A population commonly contains too many individuals to study conveniently, so an investigation is often restricted to one or more samples drawn from it.

• Construct refers to any complex psychological concept. Examples would be a person's motivation, anger, personality, intelligence, love, attachment, or fear. A Construct's height, weight or depth cannot be measured because constructs are not concrete materials in the visible world. We know how anger or attachment look, but we cannot describe in inches or tenges how much there is or where it starts and ends.

____ refers to the consistency or stability of scores

• Reliability
• Precision
• Accuracy
• Validity

Classical Test Theory

_____ is also referred to as unsystematic error.

• Systematic error
• Measurement error
• Calibration error
• Random error

Random Measurement Error

• All measurement is susceptible to error.

• Any factor that introduces error into the measurement process effects reliability.

• To increase our confidence in scores, we try to detect, understand, and minimize random measurement error.

Many theorists believe the major source of random measurement error is _____

• user error
• сontent sampling

• environmental factors
• data processing mistakes

Sources of Random Measurement Error

•The error that results from differences between the sample of items (i.e., the test) and the domain of items (i.e., all items) is referred to as content sampling error.

the term used to label the error that results from selecting test items that inadequately cover the content area that the test is supposed to evaluate

• Content sampling error

• Construct validity error
• Reliability error
• Criterion validity error

Sources of Random Measurement Error

• Random measurement error can also be the result “temporal instability:”

-Situation-Centered influences (e.g., lighting & noise)

-Person-Centeredinfluences (e.g., fatigue, illness)