Question 1

Dr.Ross runs a one-way analysis of variance to test whether participant's responses in the spider fear condition were different from participants' responses in both the rat and dog fear conditions as a whole.Dr.Ross found a significant result.Which of the following would be the most accurate results write-up for a one-way ANOVA?

Accepted Answer

A)  F(2,102)= 4.21,p = .70,eta2 = .30 
B)  F(2,102)= 4.21,p = .02,eta2 = .30 
C)  d(2,102)= 4.21,eta2 = .30 
D)  $\Sigma$(2,102)= 4.21,p = .02

Question 2

Dr.Henries decided that it would be too difficult and costly to assess all bilingual students among three states receiving federal funding for bilingual studies.Dr.Henries serves as an advisor to the bilingual club on campus as well as advisor to the foreign-language students.Dr.Henries's most cost efficient and timely option for sampling would be:

Accepted Answer

A)  simple random sampling. 
B)  stratified random sampling. 
C)  cluster sampling. 
D)  convenience sampling.

Question 3

Dr.Cullen and Dr.Rosen are having a debate on the inclusion of distractor items on the follow-up questionnaire following the completion of their experimental drug study.Dr.Cullen insists that distractor questions are extremely useful in:

Accepted Answer

A)  exaggerating hypothesis-guessing and demand characteristics. 
B)  exaggerating social desirability responding and demand characteristics. 
C)  minimizing hypothesis-guessing and confounds. 
D)  minimizing hypothesis-guessing and demand characteristics.

Question 4

Which of the following is a results write-up for a chi-square test of independence?

Accepted Answer

A)  $\chi$2(3,N= 347)= 10.72,p = .001,ᶲ = .30 
B)  F(2,94)= .72,p = .02,eta2 = .30 
C)  t(154)= -1.00,p = .32 
D)  $\beta$= .24,p = .004,R2 for the model = .05

Question 5

Why was it so important for participants not to sign the petition in the "Cool Earth" bill and for fake signatures to be included on the petition in the research study discussed in the text?

Accepted Answer

A)  it ensured participants' anonymity 
B)  it ensured methodological pluralism 
C)  it reduced social desirability bias 
D)  it increased the power of the study

Question 6

Which of the following is a results write-up for an ANOVA?

Accepted Answer

A)  $\chi$2(3,N= 347)= 10.72,p = .001,ᶲ = .30 
B)  F(2,94)= .72,p = .02,eta2 = .30 
C)  t(154)= -1.00,p = .32 
D)  $\beta$ = .24,p = .004,R2 for the model = .05

Question 7

Dr.Schubert noted the following results: F(2,94)= .72,p = .02,eta2 = .30.Which of the following numbers represents the effect size in this results write-up?

Accepted Answer

A)  2 
B)  94 
C)  .72 
D)  .30

Question 8

The dependent variable must be _____ in order to conduct an ANOVA.

Accepted Answer

A)  ordinal 
B)  interval 
C)  continuous 
D)  nominal

Question 9

The results of a one-way ANOVA suggest that the participants' fear response was differentially effected depending on their respective condition: spiders (M = 44;SD = 4.20),snakes (M = 62;SD = 7.1),and dogs (M = 21;SD = 2.20).There was a significant difference F (2,92)= .67,p = .03.Based on this information what was the significant value?

Accepted Answer

A)  7.1 
B)  .03 
C)  2.20 
D)  .67

Question 10

If a researcher unintentionally introduces another variable into an experimental design,this is referred to as:

Accepted Answer

A)  a confound. 
B)  a practice effect. 
C)  a cohort effect. 
D)  maturation.

Question 11

The data must be _____ in order to conduct a chi-square test of independence.

Accepted Answer

A)  ordinal 
B)  interval 
C)  continuous 
D)  nominal

Question 12

Tarzanna is writing a research report and has to discuss disadvantages of self-report measures.Which of the following would be correct for Tarzanna to note?

Accepted Answer

A)  Self-report measures are not susceptible to social desirability response biases. 
B)  Self-report measures are susceptible to social desirability response biases. 
C)  Self-report measures permit participants to report their own responses. 
D)  Self-report measures have high internal reliability consistencies.

Question 13

Dr.Vela is studying comorbid substance use disorders and anxiety disorders among African Americans,Caucasians,Hispanic Americans,and Native Americans between 15 years and 65 years of age.Dr.Vela is using a:

Accepted Answer

A)  multigroup design. 
B)  factorial design. 
C)  case study design. 
D)  repeated measures design.

Question 14

The results of a one-way ANOVA suggest that the participants' fear response was differentially effected depending on their respective condition: spiders (M = 44;SD = 4.20),snakes (M = 62;SD = 7.1),and dogs (M = 21;SD = 2.20).There was a significant difference F (2,92)= .67,p = .03.Based on this information what was the between-subjects degrees of freedom?

Accepted Answer

A)  21 
B)  92 
C)  2 
D)  .67

Question 15

Warren randomly assigned 60 participants to describe a positive childhood memory,a negative childhood memory,or a neutral childhood memory and then complete a mood questionnaire.Warrens wants to compare the "neutral condition" with the other two conditions.Which statistic is appropriate to use?

Accepted Answer

A)  a one-way ANOVA 
B)  independent samples t test 
C)  planned contrast 
D)  post-hoc tests

Question 16

Dr.Dupuis has been conducting the same study for multiple years in a row,but never seems to yield enough power to make any predictions based on the study results.Dr.Dupuis has seven experimental conditions based on treatment modalities for personality disorders.What is the total minimum number of participants Dr.Dupuis would need in order to yield adequate power?

Accepted Answer

A)  180 
B)  210 
C)  360 
D)  420

Question 17

To determine if food allergies influences participants' taste pallet,researchers conducted a chi-square test of independence between conditions .Based on this information what was the number of participants in this study?

Accepted Answer

A)  10 
B)  30 
C)  60 
D)  90

Question 18

Seymour is having difficulty writing up his first results section.He needs to note the reliability of the measure used in his study,but is not clear on which symbol represents Cronbach's alpha.Which is the appropriate symbol for Seymour to use?

Accepted Answer

A)  $\Sigma$ 
B)  $\Omega$ 
C)  $\beta$ 
D)  $\alpha$

Question 19

Nita signed up for a medication trial at the local hospital.She was informed that she would be in the group taking a new diet pill and other groups would be taking a new energy pill.Nita began to notice that her clothes felt different,even though the scale showed no difference in her weight.She continued to feel like she was losing weight.At the end of the 6-week trial she was informed by researchers that she in fact was taking a water pill that would have no effect on weight loss.Nita was in the:

Accepted Answer

A)  empty control group. 
B)  experimental group. 
C)  placebo group. 
D)  baseline group.

Question 20

It is very common for manipulation check questions to be embedded within the _____ on a follow-up questionnaire.

Accepted Answer

A)  demographic items 
B)  dependent variable items 
C)  distractor items 
D)  informed consent

Exam 9: B: Multi-Group Design: Im Feeling Hot, but Is the Earth Hot, Too

Dr.Cullen and Dr.Rosen are having a debate on the inclusion of distractor items on the follow-up questionnaire following the completion of their experimental drug study.Dr.Cullen insists that distractor questions are extremely useful in:

Which of the following is a results write-up for a chi-square test of independence?

Why was it so important for participants not to sign the petition in the "Cool Earth" bill and for fake signatures to be included on the petition in the research study discussed in the text?

Which of the following is a results write-up for an ANOVA?

Dr.Schubert noted the following results: F(2,94) = .72,p = .02,eta² = .30.Which of the following numbers represents the effect size in this results write-up?

The dependent variable must be _____ in order to conduct an ANOVA.

If a researcher unintentionally introduces another variable into an experimental design,this is referred to as:

The data must be _____ in order to conduct a chi-square test of independence.

Tarzanna is writing a research report and has to discuss disadvantages of self-report measures.Which of the following would be correct for Tarzanna to note?

Dr.Vela is studying comorbid substance use disorders and anxiety disorders among African Americans,Caucasians,Hispanic Americans,and Native Americans between 15 years and 65 years of age.Dr.Vela is using a:

Warren randomly assigned 60 participants to describe a positive childhood memory,a negative childhood memory,or a neutral childhood memory and then complete a mood questionnaire.Warrens wants to compare the "neutral condition" with the other two conditions.Which statistic is appropriate to use?

To determine if food allergies influences participants' taste pallet,researchers conducted a chi-square test of independence between conditions .Based on this information what was the number of participants in this study?

Seymour is having difficulty writing up his first results section.He needs to note the reliability of the measure used in his study,but is not clear on which symbol represents Cronbach's alpha.Which is the appropriate symbol for Seymour to use?

It is very common for manipulation check questions to be embedded within the _____ on a follow-up questionnaire.

Exam 9: B: Multi-Group Design: Im Feeling Hot, but Is the Earth Hot, Too

Dr.Cullen and Dr.Rosen are having a debate on the inclusion of distractor items on the follow-up questionnaire following the completion of their experimental drug study.Dr.Cullen insists that distractor questions are extremely useful in:

Which of the following is a results write-up for a chi-square test of independence?

Why was it so important for participants not to sign the petition in the "Cool Earth" bill and for fake signatures to be included on the petition in the research study discussed in the text?

Which of the following is a results write-up for an ANOVA?

Dr.Schubert noted the following results: F(2,94) = .72,p = .02,eta2 = .30.Which of the following numbers represents the effect size in this results write-up?

The dependent variable must be _____ in order to conduct an ANOVA.

If a researcher unintentionally introduces another variable into an experimental design,this is referred to as:

The data must be _____ in order to conduct a chi-square test of independence.

Tarzanna is writing a research report and has to discuss disadvantages of self-report measures.Which of the following would be correct for Tarzanna to note?

Dr.Vela is studying comorbid substance use disorders and anxiety disorders among African Americans,Caucasians,Hispanic Americans,and Native Americans between 15 years and 65 years of age.Dr.Vela is using a:

Warren randomly assigned 60 participants to describe a positive childhood memory,a negative childhood memory,or a neutral childhood memory and then complete a mood questionnaire.Warrens wants to compare the "neutral condition" with the other two conditions.Which statistic is appropriate to use?

To determine if food allergies influences participants' taste pallet,researchers conducted a chi-square test of independence between conditions .Based on this information what was the number of participants in this study?

Seymour is having difficulty writing up his first results section.He needs to note the reliability of the measure used in his study,but is not clear on which symbol represents Cronbach's alpha.Which is the appropriate symbol for Seymour to use?

It is very common for manipulation check questions to be embedded within the _____ on a follow-up questionnaire.

Dr.Schubert noted the following results: F(2,94) = .72,p = .02,eta² = .30.Which of the following numbers represents the effect size in this results write-up?