Psych 231 Review Exam 2

Question 1

A non-probability sampling method where new participants are recruited by others to form part of the sample is known as:

Accepted Answer

Snowball Sampling

Question 2

Qualitative research often uses interviews to collect data and is considered statistics free research.

Accepted Answer

True

Question 3

"Happiness is a feeling of well-being" This is a(n) ____ definition.

Accepted Answer

Conceptual

Question 4

Type I error occurs when:

Accepted Answer

a null hypothesis is rejected but shouldn't have been

Question 5

Mundane Realism is the extent to which an experimental situation resembles a real-life situation or event.

Accepted Answer

True

Question 6

Type II error occurs when:

Accepted Answer

a null hypothesis is not rejected but should be

Question 7

The factory workers productivity increases when they are being watched by their supervisor. What is this an example of?

Accepted Answer

Hawthorne effect

Question 8

Cohen's d is:

Accepted Answer

The difference between two means

Question 9

Selecting your gender or hair color on a survey is an example of which level of measurement?

Accepted Answer

Nominal

Question 10

If the effects in a study are significantly large (p<.05), what happens with the null?

Accepted Answer

The null is rejected

Question 11

When we assume the null is true in the population, we assume that:

Accepted Answer

There is no relationship between the variables in the population

Question 12

If a distribution is skewed to the right, which way does the tail go?

Accepted Answer

To the right

Question 13

We can manipulate and measure variables in correlational research.

Accepted Answer

False

Question 14

Which of the following is a threat to external validity?

Accepted Answer

All of the above

Question 15

Which of the following is NOT a threat to internal validity?

Accepted Answer

Counterbalancing

Question 16

A false explanation given to participants about the true purpose of a study is known as:

Accepted Answer

Cover story

Question 17

What is the difference between a non-directional two tailed and a directional one tailed hypothesis?

Accepted Answer

a one-tailed test specifies a direction, while a two-tailed test does not

Question 18

When it is impractical or impossible to manipulate an independent variable a researcher might choose to:

Accepted Answer

Conduct a correlational study

Question 19

Mixed methods research combines what two approaches?

Accepted Answer

Quantitative and qualitative approaches

Question 20

A substance or treatment that appears to be a real medical intervention but has no active therapeutic effect is known as

Accepted Answer

Placebo

Question 21

An extraneous variable that differs across levels of the independent variable:

Accepted Answer

Confound

Question 22

Statistical Validity: extent to which drawn conclusions of a research study can be considered accurate from a stats test

Accepted Answer

True

Question 23

What is the purpose of counterbalancing?

Accepted Answer

To help prevent order effects within-subjects designs

Question 24

What is the best interpretation of a Cohen's d effect size of 0.2?

Accepted Answer

Small effect

Question 25

Which of the following is NOT true about the Third Variable Problem?

Accepted Answer

It refers to when a researcher uses a one-tailed test instead of a two-tail

Question 26

Used to draw conclusions about a population based on data from a sample

Accepted Answer

Inferential statistics

Question 27

In Asch's classic line experiment, a participant is likely to conform and give an incorrect answer when:

Accepted Answer

The group unanimously provides a clearly incorrect answer

Psych 231 Review Exam 2

Questions 27

Psych 231 Review Exam 2

Questions 27