practice questions

Question 1

it can be expected that the smallest eigenvalues estimated and reported in a scree plot will represent nothing more than what?

Answer 1

random variance

Question 2

internal consistency reliability is a useful alternative to what?

Answer 2

alternative forms reliability and test retest reliability

Question 3

all other things equal, an increase in sample homogeneity would be expected to what?

Answer 3

decrease internal consistency reliability

Question 4

the assignment of numerals to objects according to rules is?

Answer 4

measurement

Question 5

are true scores necessarily perfect from the perspectives of both reliability and validity?

Answer 5

no

Question 6

reliability and what are essentially opposites?

Answer 6

measurement error

Question 7

nunnally’s minimum reliability recommendation for exploratory research is?

Answer 7

.70

Question 8

is high internal consistency reliability (greater than .80) expected to indicate convincingly that the data are associated with a single dimension?

Answer 8

no

Question 9

are negative correlations between items excluded from the calculations of internal consistency reliability?

Answer 9

no

Question 10

according to cronbach, the purpose of a test is to what?

Answer 10

compare behaviours of two or more people

Question 11

at times, it can make sense to sacrifice levels of ____ in order to achieve greater levels of ____?

Answer 11

observed score variance; total variance

Question 12

what kind of sampling can expected to yield a probability sample?

Answer 12

random sampling

Question 13

establishing the plausibility of a psychological dimension is the purpose of what research?

Answer 13

construct validity

Question 14

within the context of point-estimate estimation of a test score, a confidence interval represents a range of values in which the what is likely to fall?

Answer 14

true score