Chapter 5

Question 1

Coefficient omega

Answer 1

Another estimate of internal reliability shown to be superior to cronbavhs alpha

Question 2

Concurrent validity

Answer 2

A type of construct validity that examines wether the measure can predict a criterion measured at the same time, rather than some criterion behaviour in the future.

Question 3

Construct validity

Answer 3

The degree to which a measure accuratley measures the theoretical construct it is designed to measure

Question 4

Content validity

Answer 4

A form of construct validity evaluated by comparing the content of the measure to the theoretical definition kf the construct, ensuring that all aspects of the construct are measured and no extraneus elements are also measured

Question 5

Convergent validity

Answer 5

An aspect of construct validity assesed by examing the extent to which scores on the measure are related to other measures of the same similar construct.

Question 6

Cronbachs alpha

Answer 6

An indicator of internal consistency reliability assessed by examining the average correlation of each item in a measure with every other question

Question 7

Discriminant validity

Answer 7

An aspect of construct validity in which scores on a measure are not related to scores on conceptually unrelated measures; also known as divergent validity.

Question 8

Face validity

Answer 8

The degree to which a measure appears to measure the intended variable.

Question 9

Internal consitency reliability

Answer 9

A form of relaibility assesing the degree to which the items in a scale are consistent in measuring the same construct or variable.

Question 10

Inter-rater relibility

Answer 10

An indicator of relibility that examines the degree to which two or more raters agree, having the same or similar judgement for a set of stimulis

Question 11

Interval scale

Answer 11

A scale of measurement in which the intervals between numbers on the scale are all equal in size

Question 12

Measurement error

Answer 12

Anything that contributes to the score on a measure that is not based on the true score. In other words this is responsible for the degree to which a score on a measure deviatea from the true value of the measured variable

Question 13

Nominal scale

Answer 13

A scale of measurement with two or more categories that have no numerical properties eg greater than less than

Question 14

Ordinal scale

Answer 14

A scale of measurement in which the measurement categories form a rank order along a continuum

Question 15

Pearson correlation coefficient

Answer 15

A statistic indicating the strenght of correlation, appropiate for interval, scale data from a normal distibuted population

Question 16

Predictive validity

Answer 16

An aspect of construct validity that invovles examining if a measure can predict a theoretical relevent future behaviour or criterion; criterion validity

Question 17

Ratio scale

Answer 17

A numeric scale of measurement with equal intervals, in which there is a meaningful zero point, indivating total absence of the variable being measure

Question 18

Reactivity

Answer 18

When the act of measuring or observing something changes it. Observation of individual changes behaviour

Question 19

Reliability

Answer 19

The degree to which a measurement is consistent, providing a stable form of measurement

Question 20

Split-half reliability

Answer 20

An assesment of internal consistency for a scale achieved by splitting a measurw into two havles, then correlating performance on one half with performance on the other half

Question 21

Test-retest reliability

Answer 21

A form of reliability assessed by administering the same measure on two different occasions, and then calculating the correlation between the two different scores

Question 22

True score

Answer 22

An individual actual level of the variable being measured, not to be confused with the score they get on the measure of that variable