Imagine it happening to my classmates: using video testimonials as a social marketing intervention in adolescent smoking cessation programs

Figures & data

Table 1. Manipulation check for study II.

	Level	Mean	SD	t	Sig. (2-tailed)
Manipulation check SoTN (composite)	Light	3.809	.339	−2.185	.049
	Severe	4.333	.535
Manipulation check AS (composite)	Secure	4.371	.604	2.416	.033
	Insecure	3.685	.445

Note: n = 14; SoTN: Salience of The Need; AS: Attachment Style.

Table 2. General Linear Model for study II.

	Model with covariates			Model with no covariates
	Mean Square	F	Sig	Mean Square	F	Sig
Corrected Model	1.735	11.700	.002	2.602	8.584	.004
Intercept	.002	.013	.911	389.912	1286.493	.000
PK	.575	3.882	.084	–	–	–
PB	.006	.039	.848	–	–	–
SoTN	.725	4.891	.058	.043	.141	.715
AS	1.001	6.753	.032	6.608	21.804	.001
SoTN * AS	3.498	23.592	.001	.860	2.838	.123

Note: PK: Prior Knowledge; PB: Prior Belief; SoTN: Salience of The Need; AS: Attachment Style. n = 14.

Table 3. Associative test between empathic concern and altruistic motivation for study II.

	β-estimates	t-value	p-value	Result
Constant	2.324	2.151	.053	–
Empathic concern	.669	3.367	.006	Supported

Note: Dependen variable = Altruistic motivation, r = 0,697, r²=0.486, f = 11.340, sign = 0.006, n = 14.

Table 4. Manipulation check for study III.

	Level	Mean	SD	t	Sig. (2-tailed)
Manipulation check SoTN (composite)	Light	3.939	.589	2.049	0.047
	Severe	4.290	.561
Manipulation check AS (composite)	Secure	4.427	.498	2.896	0.006
	Insecure	3.930	.645

Note: n = 45; SoTN: Salience of The Need; AS: Attachment Style.

Table 5. General linear model for study III.

	Model with covariates			Model with no covariates
	Mean Square	F	Sig	Mean Square	F	Sig
Corrected Model	2.265	2.234	.070	3.519	3.581	.022
Intercept	5.781	5.704	.022	1196.219	1217.141	.000
PK	.326	.322	.574	-	-	-
PB	.317	.313	.579	-	-	-
SoTN	4.897	4.832	.034	5.291	5.384	.025
AS	4.022	3.968	.053	4.455	4.533	.039
SoTN * AS	1.064	1.050	.312	1.187	1.208	.278

Note: PK: Prior Knowledge; PB: Prior Belief; SoTN: Salience of The Need; AS: Attachment Style, n = 45.

Table 6. Associative test between empathic concern and altruistic motivation for study III.

	β-estimates	t-value	p-value	Result
Constant	4.747	9.398	.000	–
Empathic concern	.296	3.089	.004	Supported

Note: Dependen variable = Altruistic motivation, r = 0,426, r²=0.182, f = 9.542, sign = 0.004, n = 45.