Deck 9: Multi-Group Design: Part 2

Question 1

In a study examining social interaction,which of the following variables would be considered the dependent variable based on this research question: How does the number of close friends a child reports influence his or her social and emotional competency with unfamiliar peers?

A) quantity of close friends
B) peers
C) emotional health
D) social and emotional competency

Answer 1

social and emotional competency

Question 2

Researchers decide to use self-report,teacher report,and parent report data,as well as sociometric data from peers.These researchers are employing _____ to help answer the desired research question.

A) baseline data
B) power
C) methodological pluralism
D) multilevel design

Answer 2

methodological pluralism

Question 3

Which of the following statements is true regarding post-hoc tests and planned contrasts?

A) both statistical tests are planned ahead of time
B) post-hoc tests are not determined ahead of time,but planned contrasts are
C) neither statistical test compares between groups
D) post-hoc tests combine two conditions so you can compare them with a third

Answer 3

post-hoc tests are not determined ahead of time,but planned contrasts are

Question 4

Which of the following is the symbol for chi-square?

A) $\Omega$
B) $\alpha$ ²
C) $\beta$
D) $\chi$ ²

Question 5

When conducting a study using multiple groups it is best to have at least _____ per condition for adequate power.

A) 20
B) 30
C) 40
D) 50

Question 6

_____ are statistical tests that allow researchers to test comparisons between groups that are predicted ahead of time.

A) Planned contrasts
B) Post-hoc tests
C) Exploratory analyses
D) Paired samples t tests

Question 7

In an experiment studying treatment effectiveness for ADHD in adults,which of the following would be considered a placebo?

A) a sugar pill
B) a caffeine pill
C) a Ritalin pill
D) an Adderall pill

Question 8

_____ is a statistical test researchers use to look for potential differences that they did not anticipate or predict prior to the study.

A) A one-way ANOVA
B) Multiple regression
C) A chi-square
D) Exploratory analysis

Question 9

In a study examining physical health,which of the following variables would be considered the independent variable based on this research question: How does the frequency of contact with animals influence an elderly patient's physical health based on doctor report?

A) frequency of animal contact
B) peers
C) physical health
D) frequency of doctor visits

Question 10

In a 2008 study examining the cognitive benefits of interacting with nature it was found that:

A) individuals who walked in a downtown area compared with a park performed better on attention tasks.
B) individuals who experienced flooding performed worse on an attention task.
C) individuals who walked in a park compared with a downtown area performed better on attention tasks.
D) individuals who walked in a park compared with a downtown area performed worse on attention tasks.

Question 11

A higher standard deviation in one group compared with others suggests that participants in that group endorsed _____ of responses.

A) a more narrow band
B) a wider variety
C) limited number
D) an absence

Question 12

In a study examining sleep,which of the following variables would be considered the dependent variable based on this research question: How does the duration of sleep influence productivity at work for individuals with sleep apnea?

A) diagnosis of sleep apnea
B) productivity at work
C) physical health
D) duration of sleep

Question 13

If you have a multigroup design with four groups,roughly what is the minimum number of participants you should have for reasonable power in your study?

A) 75
B) 100
C) 120
D) 220

Question 14

Which of the following statistics is produced by an ANOVA?

A) T statistic
B) F statistic
C) P statistic
D) R statistic

Question 15

What is the symbol for effect size?

A) $\beta$
B) $\Omega$
C) ᶲ
D) $\pi$

Question 16

In a 2010 study investigating whether darkness increases dishonesty and self-interested behaviors it was suggested that:

A) participants in the dimmer room exaggerated their success on the task in order to earn more money.
B) participants in the more lit room exaggerated their success on the task in order to earn more money.
C) participants who wore sunglasses were more likely to share their earnings.
D) participants who wore clear glasses were less likely to share their earnings.

Question 17

In a 2008 study examining the effect of experiencing physical warmth on the manifestation of interpersonal warmth found:

A) those participants who held a hot object were more likely to take a gift for themselves rather than a friend.
B) those participants who held the hot cup rated the other person's personality less favorably.
C) those participants who held the cold cup rated the other person's personality more favorably.
D) those participants who held the hot cup rated the other person's personality more favorably.

Question 18

In an experimental design if participants were not influenced by the _____,there really was not an experiment.

A) dependent variable
B) manipulation
C) confound variable
D) covariate

Question 19

In a study examining Internet gaming,which of the following variables would be considered the independent variable based on this research question: How does duration of Internet gaming influence the gamer's attitudes toward social interaction with peers?

A) social interaction
B) peers
C) duration of gaming
D) type of games

Question 20

If you have a multigroup design with 12 groups,roughly what is the minimum number of participants you should have for reasonable power in your study?

A) 250
B) 360
C) 470
D) 660