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Cognitive Research: Principles and Implications

Table 7 Summary of data

From: Judging the credibility of websites: an effectiveness trial of the spacing effect in the elementary classroom

 

Massed

Spaced

n

M

SD

95% CI

n

M

SD

95% CI

Pre-test paragraph

        

Categories used (/4)

367

0.85

0.697

0.78, 0.92

349

0.94

0.723

0.87, 1.02

Questions used (/14)

367

1.43

1.21

1.30, 1.55

349

1.33

1.19

1.20, 1.46

Final test paragraph

        

Website 1

        

Categories used (/4)

365

2.3

1.03

2.19, 2.40

348

2.2

1.11

2.09, 2.33

Questions used (/14)

365

4.44

2.5

4.18, 4.69

348

4.43

2.67

4.06, 4.62

Website 2

        

Categories used (/4)

363

2.17

1.16

2.05, 2.28

340

2.1

1.22

1.97, 2.23

Questions used (/14)

363

3.44

2.23

3.22, 3.68

340

3.4

2.33

3.15, 3.65

Final test recall

        

Categories recalled (/4)

367

2.3

1.4

2.16, 2.45

349

2.58

1.3

2.45, 2.73

Website ratings*

        

Pre-test

367

2.34

1.25

2.20, 2.48

349

2.26

1.3

2.12, 2.41

Lesson 1

346

2.23

1.4

2.06, 2.36

324

2.27

1.35

2.13, 2.44

Lesson 2

349

2.84

1.98

2.64, 3.07

331

2.31

1.82

2.12, 2.54

Lesson 3

352

1.68

1.36

1.48, 1.77

341

2

1.82

1.81, 2.23

Final test 1

367

1.99

1.64

1.84, 2.21

349

2.04

1.66

1.83, 2.20

Final test 2

363

2.7

2.1

2.39, 2.85

341

2.66

1.89

2.38, 2.80

  1. Accuracy scores for categories and questions in the spaced and massed conditions, at pre-test and at final test
  2. *Website ratings are based on difference scores (absolute value of student rating − correct rating)
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