Table 2 Estimated means and standard deviations of knowledge, attitude towards alcohol and intention to drink alcohol per wave, and effect sizes for differences between conditions in changes between waves

Knowledge

-.14

.07

.20

  Non-narrative

3.13 (1.41)^a

3.76 (1.65)

2.94 (1.52)^a

  Narrative

3.14 (1.56)^b

3.57 (1.51)

3.05 (1.40)^b

  Overall

3.14 (1.49)^c

3.66 (1.57)

3.00 (1.46)^c

Attitude towards alcohol

-.07

-.04

.03

  Non-narrative

1.76 (.69)^d

1.67 (.68)^d

1.72 (.69)^d

  Narrative

1.81 (.74)^e

1.67 (.67)^f

1.74 (.71)^e,f

  Overall

1.79 (.72)^g

1.67 (.67)

1.74 (.70)^g

Intention to drink alcohol

-.07

-.01

-.08

  Non-narrative

1.68 (.66)^h

1.68 (.69)^h

1.72 (.70)^h

  Narrative

1.71 (.71)ⁱ

1.66 (.71)ⁱ

1.74 (.77)ⁱ

  Overall

1.69 (.69)^j

1.67 (.70)^j

1.73 (.74)^j