Page 1 of 103
PSYC 355 2025/2026 EXAM 1 BANK WITH
CURRENTLTY COMPLETE TESTING QUESTIONS AND
DETAILED CORRECT ANSWERS/GUARANTEED
PASS/TOP-RATED A+.
PSYC 355
Ace your PSYC 355 Exam 1 with this targeted guide, designed to
master research methodologies, statistical concepts, and data
analysis in behavioral sciences. This resource delivers practical,
scenario-based questions covering experimental design,
correlation, and ethical research practices.
A researcher is using a repeated-measures study to evaluate
the difference between two treatments. If the difference
between the treatments is consistent from one participant
to another, then the data should produce ______. ......
ANSWER ....... a small variance fro the difference scores
and a small standard error
For which of the following situations would a repeated-
measures research design be appropriate? ...... ANSWER
....... comparing pain tolerance with and without
acupuncture needles.
, Page 2 of 103
If other factors are held constant, which of the following
sets of data would produce the largest value for an
independent-measures t statistic? ...... ANSWER ....... the
two samples both have n=30 with sample variances of 20
and 25
If other factors are held constant, the larger the difference
between the two sample means, the greater the likelihood
that the independent-measures t test will find a significant
difference. ...... ANSWER ....... T
A sample of n = 9 college students is used to evaluate the
effectiveness of a new Study Skills Workshop. Each
student's grade point average (GPA) is recorded for the
semester before the workshop and for the semester after
the workshop. The average GPA improved by MD = 0.60
points with s2 = 0.09. The researcher would like to use the
sample to estimate how much effect the workshop would
have for the entire college population. Which of the
following is the 80% confidence interval for these data?
...... ANSWER ....... µD = 0.60 + 0.10(1.397)
A research study compares the mean weight for a sample of
n = 36 participants before they begin a 6-week diet and their
, Page 3 of 103
mean weight at the end of the diet. This is an example of an
independent-measures design. ...... ANSWER ....... F
One sample has n = 5 scores and the second has n = 10
scores. If the pooled variance for the two samples is 30,
what is the value of the estimated standard error for the
sample mean difference? ...... ANSWER ....... 3
A repeated-measures research study comparing two
treatments with a set of 10 scores in each treatment will
produce a t statistic with df = 18. ...... ANSWER ....... f
A researcher reports df = 18 for a repeated-measures t
statistic. This research study used a total of n = 19
participants. ...... ANSWER ....... T
An independent-measures research study uses a total of 18
participants to compare two treatment conditions. If the
results are used to construct a 90% confidence interval for
the population mean difference, then the t values will be
±1.746. ...... ANSWER ....... T
, Page 4 of 103
Which of the following confidence intervals also indicates a
significant difference between treatments with α = .05? ......
ANSWER ....... estimate that u1-u2 is in an interval
between 2 and 10 with a 95% confidence level
A repeated-measures test usually is more likely to detect a
real treatment effect than an independent-measures test
because the repeated-measures design typically has a
smaller variance and a smaller estimated standard error.
...... ANSWER ....... T
A repeated-measures study and matched-subjects study
both produce t statistics with df = 20. The repeated-
measures study used more participants than the matched-
subjects study. ...... ANSWER ....... F
The following data were obtained from a repeated-
measures research study. What is the value of SSfor the
difference scores?
SUBJECT - - 1st - - 2nd#1 - - - - - 10 - - 11#2- - - - - 4 - - 6#3 - - -
- - 7 - - 9#4- - - - - 6 - - - 5 ...... ANSWER ....... 6
PSYC 355 2025/2026 EXAM 1 BANK WITH
CURRENTLTY COMPLETE TESTING QUESTIONS AND
DETAILED CORRECT ANSWERS/GUARANTEED
PASS/TOP-RATED A+.
PSYC 355
Ace your PSYC 355 Exam 1 with this targeted guide, designed to
master research methodologies, statistical concepts, and data
analysis in behavioral sciences. This resource delivers practical,
scenario-based questions covering experimental design,
correlation, and ethical research practices.
A researcher is using a repeated-measures study to evaluate
the difference between two treatments. If the difference
between the treatments is consistent from one participant
to another, then the data should produce ______. ......
ANSWER ....... a small variance fro the difference scores
and a small standard error
For which of the following situations would a repeated-
measures research design be appropriate? ...... ANSWER
....... comparing pain tolerance with and without
acupuncture needles.
, Page 2 of 103
If other factors are held constant, which of the following
sets of data would produce the largest value for an
independent-measures t statistic? ...... ANSWER ....... the
two samples both have n=30 with sample variances of 20
and 25
If other factors are held constant, the larger the difference
between the two sample means, the greater the likelihood
that the independent-measures t test will find a significant
difference. ...... ANSWER ....... T
A sample of n = 9 college students is used to evaluate the
effectiveness of a new Study Skills Workshop. Each
student's grade point average (GPA) is recorded for the
semester before the workshop and for the semester after
the workshop. The average GPA improved by MD = 0.60
points with s2 = 0.09. The researcher would like to use the
sample to estimate how much effect the workshop would
have for the entire college population. Which of the
following is the 80% confidence interval for these data?
...... ANSWER ....... µD = 0.60 + 0.10(1.397)
A research study compares the mean weight for a sample of
n = 36 participants before they begin a 6-week diet and their
, Page 3 of 103
mean weight at the end of the diet. This is an example of an
independent-measures design. ...... ANSWER ....... F
One sample has n = 5 scores and the second has n = 10
scores. If the pooled variance for the two samples is 30,
what is the value of the estimated standard error for the
sample mean difference? ...... ANSWER ....... 3
A repeated-measures research study comparing two
treatments with a set of 10 scores in each treatment will
produce a t statistic with df = 18. ...... ANSWER ....... f
A researcher reports df = 18 for a repeated-measures t
statistic. This research study used a total of n = 19
participants. ...... ANSWER ....... T
An independent-measures research study uses a total of 18
participants to compare two treatment conditions. If the
results are used to construct a 90% confidence interval for
the population mean difference, then the t values will be
±1.746. ...... ANSWER ....... T
, Page 4 of 103
Which of the following confidence intervals also indicates a
significant difference between treatments with α = .05? ......
ANSWER ....... estimate that u1-u2 is in an interval
between 2 and 10 with a 95% confidence level
A repeated-measures test usually is more likely to detect a
real treatment effect than an independent-measures test
because the repeated-measures design typically has a
smaller variance and a smaller estimated standard error.
...... ANSWER ....... T
A repeated-measures study and matched-subjects study
both produce t statistics with df = 20. The repeated-
measures study used more participants than the matched-
subjects study. ...... ANSWER ....... F
The following data were obtained from a repeated-
measures research study. What is the value of SSfor the
difference scores?
SUBJECT - - 1st - - 2nd#1 - - - - - 10 - - 11#2- - - - - 4 - - 6#3 - - -
- - 7 - - 9#4- - - - - 6 - - - 5 ...... ANSWER ....... 6
