Table 2 Chi-square tests comparing fidelity-consistent and inconsistent content modifications

Adding elements

5

20

χ² (1, N = 25) = 9

p = .003

Removing/skipping

3

11

χ² (1, N = 14) = 4.571

p = .033

Shortening/condensing

14

6

χ² (1, N = 20) = 3.2

p = .074

Lenghthening/extending

17

3

χ² (1, N = 20) = 9.8

p = .002

Integrating another treatment

4

13

χ² (1, N = 17) = 4.765

p = .029

Loosening structure

5

6

χ² (1, N = 11) = .091

p = 0.763