Lecture 1 Quiz

Which of these is NOT a type of psychological test?

A person holds a job where it is their responsibility to remove faulty food from a conveyor belt. At the beginning of the day they remove almost all the damaged fruit; at the end of the day they are removing less of the damaged fruit but also removing a portion of the undamaged fruit. 1. This effect is likely to represent a change in response bias. 2. This effect likely represents a decrease in sensitivity.

What are the two parameters used to describe a relationship in classical test theory?

Reliable change index (RCI) must be greater than____ to have a statistically significant change.

Statement 1: A correlation can be calculated if there is zero variability. Statement 2: If both novices and experts were given an easy task in a study this may restrict the range of scores.

Statement 1: Cronbach’s alpha is appropriate to use when estimating internal consistency of PSYC3020 exam content. Statement 2: Test-retest reliability is the correlation between scores on the same test by the same people done at the same time.

Statement 1: Constructs are observable, underlying hypothetical traits or characteristics that we can try and measure indirectly using tests. Statement 2: Tests may have good face validity without any actual validity.

The alternative to the standard error of the difference (SEdiff) in clinical contexts is:

Statement 1: A power analysis allows you to determine the exact number of people needed to detect a particular size of correlation as significant. Statement 2: Clinical and statistical significance measure the same thing as they both show the practical importance of the relationship.

Statement 1: The factors in Thurstone’s multiple factor theory of intelligence were NOT independent of one another. Statement 2: Thurstone’s Multiple Factor Model of intelligence incorporates features from the Cattel-Horn Model, Carroll’s Hierarchical Model and Spearman’s Uni-factor Model.

Statement 1: A shallow item characteristic curve indicates the item has low discrimination between the Upper and Lower binned groups. Statement 2: An item characteristic curve plots ability (on some trait) against the item difficulty index.

Statement 1. When we standardise a raw score, we do it relative to the population Statement 2. The normal curve is mathematically defined, if we can assume something is normally distributed then it means we can do more sensitive (parametric) statistical tests on it.

Which of the following variables does IQ correlate with?

1: If there was a high selection ratio for a job position, and a low cut off was set, there would be a large number of false positives. 2: One limitation of utility analysis is that is doesn't assume a linear relationship

Which of the following is not a part of Eysenck’s personality inventory?

Statement 1: Concurrent/predictive/incremental are all forms of criterion validity. Statement 2: Tests may have poor face validity, whilst still having good actual validity.

Statement 1: Questionnaires have excellent experimental control. Statement 2: Relying on participant insight and honesty is an advantage of a survey.