Week 3

Question 1

It is critical in psychological research to operationalise key terms because…

a.
DVs and IVs are typically correlated

b.
Most variables are not latent

c.
The reader needs to know what is actually being studied

d.
The reader may conflate the aim and hypothesis

Answer 1

c.
The reader needs to know what is actually being studied

Question 2

A normal distribution as a…

a.
A mean that is far from the mode

b.
Platykurtic distribution

c.
Positive skew

d.
Bell shape

Answer 2

d.
Bell shape

Question 3

“It was predicted that individuals who completed more years of education would have lower cardiovascular disease burden”. What is the correct characterisation of this statement?

a.
It is a directional aim.

b.
It is a directional hypothesis.

c.
It is a non-directional research question.

d.
It is a statement of fact.

Answer 3

b.
It is a directional hypothesis.

Question 4

We use the terms independent variable and dependent variable for….

a.
Observational research

b.
Experimental and quasi-experiential designs

c.
Cross-sectional but not longitudinal designs

d.
Longitudinal but not cross-sectional designs

Answer 4

b.
Experimental and quasi-experiential designs

Question 5

We use the terms predictor variable and outcome variable in…

Question 5 Answer

a.
Observational research

b.
Experimental research

c.
Quasi-experimental research

d.
When doing ANOVAs

Answer 5

a.
Observational research

Question 6

We are running a study manipulating bedroom light levels to investigate effects on sleep efficacy. What is the (1) IV and what is the (2) DV?

a.
(1) sleep as an umbrella term, (2) bedroom light

b.
(1) bedroom light, (2) sleep efficacy

c.
(1) sleep efficacy, (2) bedroom environment as an umbrella term

d.
(1) sleep efficacy, (2) bedroom light

Answer 6

b.
(1) bedroom light, (2) sleep efficacy

Question 7

We are running a study investigating the association between depression symptoms at age 50 and blood pressure variability at age 80. Our (1) predictor and (2) outcome variables are…?

a.
(1) blood pressure (regardless of variability) and (2) depression
b.
(1) depression and (2) blood pressure variability
c.
Neither, they are IVs and DVs
d.
(1) blood pressure variability and (2) depression

Answer 7

b.
(1) depression and (2) blood pressure variability

Question 8

What is not a property of a distribution?
a.
Variability
b.
Symmetry
c.
Information across a dataset
d.
Central tendency

Answer 8

c.
Information across a dataset

Question 9

What is not a measure of central tendency?

a.
Mean
b.
Median
c.
Skew
d.
Mode

Answer 9

c.
Skew

Question 10

Leptokurtic means…
a.
Positive kurtosis
b.
Negative skew
c.
Positive skew
d.
Neagative kurtosis

Answer 10

a.
Positive kurtosis