PSYC2012 Practice Questions

In the scientific approach, evidence is gathered via

Empiricism

To test the hypothesis that younger people are more opposed to the use of nuclear energy than older people, the best method would be

Survey

In survey research, when individuals tend to respond to all questions from a particular perspective rather than the content of the question, they are displaying:

A response set

Jack has a difficult time answering the question "are you in favour of increasing tuition in order to increase the number of classes and parking spaces offered" because it is a ...... question

Double-barrelled

20 people took part in a study which they completed two questionnaires: one that measured musical ability and one that measured their mathematical aptitude, the two sets of scores were then analysed to determine if the two skills were related. Which research design was used in the study?

A correlation study

Which of the following is not a type of reliability

Predictive

Which of the following tests has the strongest internal reliability?

A depression scale that has a cronbachs alpha of 0.92

The covariance is

All of the above

The correlation between two variables A and B is .12 with a significance of p < .01, what can we conclude?

That there is a small relationship between A and B

Most researchers use exploratory factor analysis to:

Determine the number of factors/constructs underlying a set of variables

Which statement is NOT true of exploratory factor analysis

EFA confirms the number of constructs identified in previous research

Dr. Baylor is concerned that the items on his test really do adequately represent the universe of items from which he chose. Dr Baylor's concern is one of

Content validity

What are the two types of criterion validity

Concurrent and predictive validity

Dr. Brown find that results from different methods used to assess the same trait are highly correlated and results from different methods used to assess different traits are not significantly correlated. These results demonstrate which two types of validity respectively?

Convergent and discriminate

The Kolmogorov-Smirnov test can be used to test:

Whether data are normally-distributed

The assumption of homogeneity of variance is met when:

Variances in different groups are approximately equal

What is an outlier?

A single score that is very different from the others

Why are z-scores used to check for outliers?

They standardise scores for a known mean and standard deviation, allowing comparison

I found a skew of 1.23 (SE = .65). The mean rating was 4.78. What is the z-score for the skew of my data?

1.89

What does the independent t-test test assume?

The sampling distribution is normally distributed

Which of the following sentences is an accurate description of the standard error?

It is the standard deviation of the sampling distribution of a statistic

If you use a paired samples t-test

All of these are correct

The degrees of freedom for the paired samples t-test are:

N - 1