Abstract
Despite increasing interest in the implications of adolescents’ use of sexually explicit Internet material (SEIM), we still know little about the relationship between SEIM use and adolescents’ casual sexual activities. Based on a three-wave online panel survey study among Dutch adolescents (N = 1079; 53.1% boys; 93.5% with an exclusively heterosexual orientation; Mage = 15.11; SD = 1.39), we found that watching SEIM predicted engagement in casual sex over time. In turn, casual sexual activities partially predicted adolescents’ use of SEIM. A two-step mediation model was tested to explain the relationship between watching SEIM and casual sex. It was partially confirmed. First, watching SEIM predicted adolescents’ perceptions of SEIM as a relevant information source from Wave 2 to Wave 3, but not from Wave 1 to Wave 2. Next, such perceived utility of SEIM was positively related to stronger instrumental attitudes toward sex and thus their views about sex as a core instrument for sexual gratification. Lastly, adolescents’ instrumental attitudes toward sex predicted adolescents’ engagement in casual sex activities consistently across waves. Partial support emerged for a reciprocal relationship between watching SEIM and perceived utility. We did not find a reverse relationship between casual sex activities and instrumental attitudes toward sex. No significant gender differences emerged.
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Notes
The data of this three-wave panel study have also been used in six other papers of the authors to study the antecedents of SEIM use and relationships of SEIM use with other sexual outcomes. These papers can be acquired by sending an e-mail to the corresponding author.
An additional MANOVA analysis (N = 1,467), using Pillai’s trace, was performed to document the differences between the respondents who answered “I don’t know” on at least one of the questions regarding the perceived utility of SEIM at Wave 1 and also participated in Waves 2 and 3 (N = 388) and those respondents who answered all the questions at Wave 1 and also participated in Waves 2 and 3 (N = 1079, the analytical sample of the study). The analysis included age, gender, heterosexual orientation, watching SEIM, instrumental attitudes toward sexual activities, and experience with casual sexual activities, V = .12, F(6, 1460) = 32.72, p < .001, ηp² = .12. Significant differences were found for all variables except heterosexual orientation, p = .99. Descriptive statistics showed that respondents with missing data on one of the perceived utility questions were younger, more likely to be girls, and scored lower on watching SEIM, instrumental attitudes toward sex and casual sex activities, all p < .001. These findings are in line with prior literature reporting on the characteristics of adolescents who consume SEIM (e.g., Peter & Valkenburg, 2006).
The structural equation models reported in Figs. 2 and 3 were also tested with a sample that included the participants with missing data (N = 2,137). Automatic imputation was conducted to replace missing values in SPSS (version 23). A pooled dataset of the mean estimates of the missing data was calculated from the five imputed datasets (i.e., multiple imputation, Acock, 2007).
The results for the model that tested the reciprocal relationships between watching SEIM and casual sex were similar to the results reported in the manuscript for the sample that excluded participants with missing values (N = 1079, Fig. 2). The model, χ²(202) = 2524.88, p < .001, CFI = .95, RMSEA = .07 (90% CI: .071/.076), χ²/df = 12.50, showed that all paths were similar to the model reported in Fig. 2.
The results for the model that tested the two-step mediation model showed a good fit, χ²(833) = 4313.35, p < .001, CFI = .95, RMSEA = .04 (90% CI: .043/.046), χ²/df = 5.18. The results for the paths were similar to the results reported in Fig. 3, except for three paths. Exposure to SEIM at Wave 1 positively predicted perceived utility of SEIM at Wave 2, β = .07, B = .07, SE = 0.26, p < .01 (bc 95% bt CI: .021/.130). This relationship was not significant in the model shown in Fig. 3. The path from instrumental attitudes toward sex at Wave 1 marginally significantly predicted casual sex at Wave 2 according to the bootstrapped confidence intervals, β = .05, B = .01, SE = 0.00, p < .05 (bc 95% bt CI: − .001/.013). This path was significant in the model in Fig. 3. In addition, the paths from engagement into casual sex at Wave 1/Wave 2 to instrumental attitudes toward sex at Wave 2/Wave 3 were significant, respectively, β = .09, B = .67, SE = 0.17, p < .001 (bc 95% bt CI: .268/1.105), β = .07, B = .46, SE = 0.15, p < .005 (bc 95% bt CI: .136/.815). Theses paths were not significant in the model in Fig. 3. This shows that systematic drop-out due to unfamiliarity with SEIM (see footnote 2) may influence the results. Because imputation methods have been debated (Allison, 2003), we chose to report the results without imputation in the results section.
Because our three-wave design did not allow to model the relationship between perceived utility of SEIM and instrumental attitudes toward sex over time, a separate model was tested. In line with cognitive dissonance theory (Festinger, 1957) and RSM (Slater, 2007, 2014), a new model with the cross-lagged relationships between perceived utility of SEIM and instrumental attitudes toward sex was tested. Age, gender, and heterosexual orientation were added as control variables. The fit was good, χ²(202) = 412.70, p < .001, CFI = .99, RMSEA = .03 (90% CI: .027/.035), χ²/df = 2.04, and all expected longitudinal paths between perceived utility of SEIM and instrumental attitudes toward sex were significant according to normal test theory and bootstrapped CFI’s, p < .05. One exception was that perceived utility of SEIM at Wave 1 significantly predicted instrumental attitudes at Wave 2 according to results of normal test theory, β = .09, B = .07, SE = 0.32, p < .05, but marginally significant according to bootstrapping analysis, bc 95% bt CI: − .004/.137. The model thus supported that perceived utility of SEIM is a predictor of instrumental attitudes toward sex, but also that instrumental attitudes toward sex predict the perceived utility of SEIM over time.
See footnote 4
Prior literature has suggested that the influence of sexual media content may differ according to age (Ward, 2003). Therefore, we conducted two additional model constrain tests to examine whether the models reported in Figs. 2 and 3 differed between adolescents aged 13 to 15 years (n = 613) and adolescents aged 16 to 17 years (n = 466). These models controlled for heterosexual orientation and gender. The results showed the relationships were not significantly different for the models shown in Fig. 2, CMIN (4) = 7.47, p = . 113, and Fig. 3, CMIN (11) = 10.61, p = .467. Age did not moderate the results.
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Vandenbosch, L., van Oosten, J.M.F. Explaining the Relationship Between Sexually Explicit Internet Material and Casual Sex: A Two-Step Mediation Model. Arch Sex Behav 47, 1465–1480 (2018). https://doi.org/10.1007/s10508-017-1145-8
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DOI: https://doi.org/10.1007/s10508-017-1145-8