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01 Sep 2025, 04:21
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Researchers conducted a controlled study to examine how different follow-up activities affected retention of the same academic material. Five groups of equal size participated. All participants were drawn from the same academic program, and the groups were balanced with respect to prior course performance, gender, and age distribution. Each group first read the same chapter of a textbook for one hour.
After this initial reading, four groups were assigned distinct one-hour follow-up activities:
• Flashcard Review: students studied a prepared set of flashcards that summarized key concepts from the chapter.
• Silent Re-reading: students read the chapter again quietly on their own.
• Video Recap: students watched a one-hour instructional video that explained and summarized the chapter.
• Group Discussion: students discussed the chapter in their assigned groups, using a prepared set of guiding questions.
A fifth group served as the control. These students read the chapter once for one hour and then took the recall quizzes without any additional activity.
All groups completed the recall quiz three times: immediately after their assigned study procedure, one day later, and one week later. None of the groups had any further contact with the material between the first test and the final test. The quiz scores reported for each group represent the average percentage of correct answers achieved by that group.
After this initial reading, four groups were assigned distinct one-hour follow-up activities:
• Flashcard Review: students studied a prepared set of flashcards that summarized key concepts from the chapter.
• Silent Re-reading: students read the chapter again quietly on their own.
• Video Recap: students watched a one-hour instructional video that explained and summarized the chapter.
• Group Discussion: students discussed the chapter in their assigned groups, using a prepared set of guiding questions.
A fifth group served as the control. These students read the chapter once for one hour and then took the recall quizzes without any additional activity.
All groups completed the recall quiz three times: immediately after their assigned study procedure, one day later, and one week later. None of the groups had any further contact with the material between the first test and the final test. The quiz scores reported for each group represent the average percentage of correct answers achieved by that group.
Immediately after the study session: Not consistent
One day later: Consistent
One week later: Consistent
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
76% (03:05) correct
24%
(02:55)
wrong
based on 349
sessions
History
Date
Time
Result
Not Attempted Yet
For each of the following testing stages, select Consistent if the ranking of the four study methods at that stage (in relation to the other methods) was consistent with the expected order stated in Tab 2. Otherwise, select Not consistent.
| Consistent | Not consistent | |
| Immediately after the study session | ||
| One day later | ||
| One week later |
ShowHide Answer
Official Answer
Immediately after the study session: Not consistent
One day later: Consistent
One week later: Consistent
All four experimental groups scored at least four times as much as the control group on every test.: No
The average decline across the four experimental groups from the immediate test to the one-day test was smaller than the average decline from the one-day test to the one-week test.: Yes
At least one group outperformed another group at the immediate test but scored lower than that same group at the one-week test.: Yes
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
56% (02:29) correct
44%
(02:33)
wrong
based on 392
sessions
History
Date
Time
Result
Not Attempted Yet
For each of the following statements about the recall scores in Tab 3, select Yes if the statement accurately reflects the information provided. Otherwise, select No.
| Yes | No | |
| All four experimental groups scored at least four times as much as the control group on every test. | ||
| The average decline across the four experimental groups from the immediate test to the one-day test was smaller than the average decline from the one-day test to the one-week test. | ||
| At least one group outperformed another group at the immediate test but scored lower than that same group at the one-week test. |
ShowHide Answer
Official Answer
All four experimental groups scored at least four times as much as the control group on every test.: No
The average decline across the four experimental groups from the immediate test to the one-day test was smaller than the average decline from the one-day test to the one-week test.: Yes
At least one group outperformed another group at the immediate test but scored lower than that same group at the one-week test.: Yes
The average score of the Flashcard Review group across the three tests
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
93% (01:41) correct
7%
(01:31)
wrong
based on 302
sessions
History
Date
Time
Result
Not Attempted Yet
According to the information provided in Tab 3, which one of the following values, calculated from the scores of the four experimental groups only, is the largest?
| The average score of the Silent Re-reading group across the three tests | |
| The lowest score achieved by the Group Discussion group on any test | |
| The range (highest minus lowest) of the Flashcard Review group’s scores across the three tests | |
| The median of the Video Recap group’s three scores | |
| The average score of the Flashcard Review group across the three tests |
ShowHide Answer
Official Answer
The average score of the Flashcard Review group across the three tests
Question 1:
Predicted Rankings (Tab 2):
Actual Rankings (Tab 3):
Comparison:
I29-203
Predicted Rankings (Tab 2):
- Immediately after: Flashcard > Group Discussion > Video > Silent
- 1 day later: Flashcard > Group Discussion > Silent > Video
- 1 week later: Group Discussion > Flashcard > Silent > Video
Actual Rankings (Tab 3):
- Immediately after: Flashcard (82) > Group Discussion (74) > Silent (68) > Video (64)
- 1 day later: Flashcard (71) > Group Discussion (64) > Silent (50) > Video (43)
- 1 week later: Group Discussion (59) > Flashcard (55) > Silent (28) > Video (22)
Comparison:
- Immediately after: Predicted Video above Silent, but actual Silent above Video. Not consistent
- 1 day later: Prediction matches actual. Consistent
- 1 week later: Prediction matches actual. Consistent
I29-203
Question: 2.
Statement 1: All four experimental groups scored at least four times as much as the control group on every test.
Control scores: 20 (immediate), 12 (1 day), 5 (1 week).
Four times those values: 80, 48, 20.
So it is not true that all four groups scored ≥ four times control on every test.
Answer: No
Statement 2: The average decline across the four experimental groups from the immediate test to the one-day test was smaller than the average decline from the one-day test to the one-week test.
We need to compute average declines.
Compare: 15 (first drop) vs 16 (second drop).
Yes, the average decline from Immediate → 1 day is smaller than from 1 day → 1 week.
Answer: Yes
Statement 3: At least one group outperformed another group at the immediate test but scored lower than that same group at the one-week test.
This means:
Check Tab 3:
Thus, the statement is true.
Answer: Yes
I29-206
Statement 1: All four experimental groups scored at least four times as much as the control group on every test.
Control scores: 20 (immediate), 12 (1 day), 5 (1 week).
Four times those values: 80, 48, 20.
- Immediate: Flashcard (82), Discussion (74), Silent (68), Video (64). Only Flashcard ≥ 80. Others < 80.
- 1 day: Experimental groups (71, 64, 50, 43). Three ≥ 48, but Video is 43 < 48.
- 1 week: Experimental groups (55, 59, 28, 22). All ≥ 20.
So it is not true that all four groups scored ≥ four times control on every test.
Answer: No
Statement 2: The average decline across the four experimental groups from the immediate test to the one-day test was smaller than the average decline from the one-day test to the one-week test.
We need to compute average declines.
- Immediate → 1 day:
Flashcard: 82 – 71 = 11
Silent: 68 – 50 = 18
Video: 64 – 43 = 21
Discussion: 74 – 64 = 10
Average decline = (11 + 18 + 21 + 10) / 4 = 60 / 4 = 15 - 1 day → 1 week:
Flashcard: 71 – 55 = 16
Silent: 50 – 28 = 22
Video: 43 – 22 = 21
Discussion: 64 – 59 = 5
Average decline = (16 + 22 + 21 + 5) / 4 = 64 / 4 = 16
Compare: 15 (first drop) vs 16 (second drop).
Yes, the average decline from Immediate → 1 day is smaller than from 1 day → 1 week.
Answer: Yes
Statement 3: At least one group outperformed another group at the immediate test but scored lower than that same group at the one-week test.
This means:
- At the Immediate stage, Group A > Group B.
- At the One-week stage, Group A < Group B.
- In other words, the two groups switched order between Immediate and One-week.
Check Tab 3:
- Flashcard vs Group Discussion:
Immediate → Flashcard (82) > Discussion (74).
One week → Flashcard (55) < Discussion (59).
Switch occurs.
Thus, the statement is true.
Answer: Yes
I29-206
