Coping with my own way: Mediating roles of emotional expression and social support seeking in the associations between individual differences and posttraumatic growth

Abstract

This study examined the associations between individual differences and posttraumatic growth, and coping strategies as mediators among 454 trauma-exposed American college students. Results showed that relational-interdependent self-construal, optimism, emotional expression, and social support seeking were associated with higher posttraumatic growth. Moreover, social support seeking and emotional expression partially mediated between relational-interdependent self-construal and posttraumatic growth, such that relational-interdependent self-construal was associated with posttraumatic growth through increased support seeking and emotional expression. However, the association between optimism and posttraumatic growth was partially mediated only by increased emotional expression, but not social support seeking. Findings imply that individual differences may facilitate posttraumatic growth through different coping mechanisms.

Keywords

emotional expression optimism posttraumatic growth relational-interdependent self-construal social support seeking

Research has found that it is common for people who have experienced negative events (e.g. diseases, accidents, and natural disasters) to report positive changes after those events (Schubert et al., 2016). Those perceived positive changes resulting from struggles with highly stressful events as posttraumatic growth (PTG; Calhoun and Tedeschi, 2013). PTG could be reflected in positive changes in self-perception, interpersonal relationships, and life philosophy; PTG has also been found predict higher well-being among trauma-exposed individuals (Ruini et al., 2014). According to Schaefer and Moos (1998), the degree to which people report PTG depends on a number of factors, including pre-trauma resources (e.g. individual differences and environmental resources), trauma characteristics (e.g. severity of exposure), and post-trauma factors (e.g. coping processes). Among these factors, little is known regarding the potential contributions of individual differences to PTG.

The potential roles of individual differences in coping and PTG

To adjust to the stressors brought from negative life events, people generally need to evaluate the impact of the events and available resources, plus engage in specific coping strategies to deal with the stressors. Such processes are found to be important predictors of adjustment outcomes, including PTG (Danhauer et al., 2013; Larsen and Berenbaum, 2015). According to the Stress and Coping model (Lazarus and Folkman, 1984), the person-environment relationship is dynamic and mutually reciprocal. Coping with stressors is therefore transactional such that people’s individual differences and their interplay with coping strategies could affect PTG. However, this question has not been well-addressed in the literature.

Previously, researchers have explored the associations between personality attributes and PTG. Extraversion, openness, agreeableness, and conscientiousness were associated with higher PTG in small-to-medium effect sizes (rs = 0.20–0.34; Măirean, 2016). Similarly, Owens (2016) found that higher extraversion, agreeableness, and conscientiousness were associated with higher PTG among trauma-exposed undergraduate students. This study aimed to examine the roles of two other individual differences (relational-interdependent self-construal (RISC) and optimism) in PTG, plus to explore whether coping strategies might mediate their relationships with PTG.

RISC, optimism, and PTG

RISC refers to the attribute that people are connected to others and define themselves by relationships, group memberships, or important roles in such relationships (Cross et al., 2000, 2011). People with high RISC tend to think and behave in ways that strengthen existing relationships (Cross et al., 2011) and engage in relationship supportive behaviors (e.g. self-disclosure). Previously, RISC has been found to be associated with higher life satisfaction (Heintzelman and Bacon, 2015), positive affect (King and Ganotice, 2015), and level of trust toward important others (Boucher, 2014; Morry et al., 2014). However, interpersonal trust and self-disclosure to others are associated with PTG (Ramos and Leal, 2013). It is noteworthy to explore whether RISC was associated with PTG, given a lack of empirical evidence in the literature.

Optimism is one of the most commonly studied intrapersonal coping resources (i.e. intrapsychic resources a person brings to the coping tasks) for predicting PTG. A meta-analysis found that optimism was moderately associated with higher PTG (r = 0.23) among different trauma-exposed populations in 27 studies (Prati and Pietrantoni, 2009). Another recent meta-analysis also found a moderate correlation between optimism and PTG among cancer patients (r = 0.27; Shand et al., 2015). Optimism is believed to facilitate well-being by helping people focus on the most important matters, disengaging from uncontrollable problems (Malinowski and Lim, 2015), plus promoting adaptive coping strategies (Hanssen et al., 2015). However, to the best of our knowledge, the mechanism between optimism and PTG has not been empirically confirmed, leaving this a knowledge gap to be explored.

Social support seeking and emotional expression as mediating coping strategies

We propose two mediators potentially explaining the associations between RISC/optimism and PTG. Research has suggested that people with higher levels of RISC are more likely to seek and receive social support from their significant others (Heintzelman and Bacon, 2015; Ringeisen and Buchward, 2008). Research has suggested that people with higher RISC are more likely to emotionally disclose deep feelings to their significant others (Do Couto and Hennig, 2015; Morry and Kito, 2009; Wills and Petrakis, 2018). We hence speculated that those higher in RISC may feel more comfortable seeking help and sharing emotional concerns with their significant others, as they tend to include significant others into their self-concept. Adding that social support seeking and emotional expression have been consistent predictors of PTG (Baillie et al., 2014; Larsen and Berenbaum, 2015; McDonough et al., 2014), this study expected that social support seeking and emotional expression would mediate the association between RISC and PTG.

Similarly, reviews have suggested that people with higher optimism tend to engage in more active coping (which includes social support seeking; Carver and Scheier, 2014; Nes and Segerstrom, 2006) and less avoidance (Dunn et al., 2011; Rauch et al., 2013). Seeing the future in a more positive light, higher levels of optimism may also facilitate people to perceive more social support from others. That may encourage them to actively seek social support from important others. Costello (1998) also found that optimism was associated with decreased use of denial and thoughts suppression when dealing with distress, implying that optimism might facilitate emotional expression. Given that the mediating roles of social support seeking and emotional expression in the association between optimism and PTG have not been examined, this study aimed to fill this knowledge gap in testing this mediation hypothesis.

Hypotheses

Based on the above rationales, this study examined the following hypotheses. First, RISC, optimism, social support seeking, and emotional expression would be associated with higher PTG. Second, the associations between the individual differences (i.e. optimism and RISC) and PTG were hypothesized to be mediated by social support seeking and emotional expression. Specifically, RISC and optimism were hypothesized to be associated with more frequent social support seeking and emotional expression, which in turn would be associated with higher PTG.

Method

Recruitment and participants

Students from psychology classes were invited to participate and sign up for this study on an online subject pool system. Upon consent, participants were directed to a link to access to the anonymous survey. The survey took about 25 minutes to complete. Participants included 454 undergraduate students (mean age = 22.9, standard deviation (SD) = 5.45, 82% female) from a large southwestern university. The sample was racially diverse, having 20.3% Asian/Pacific Islander, 12.8% African American, 26.5% Caucasian, 35.3% Hispanic/Latino, and 5.1% self-defined in other racial groups. The study was approved by the Institution Review Board.

Measures

Posttraumatic growth

The Posttraumatic Growth Inventory (PTGI; Tedeschi and Calhoun, 1996) was used to measure participants’ positive changes as a result of negative events they had experienced. This scale was reliable and valid among college students in the United States (Mohr and Rosén, 2017). On a 6-point scale (0 = I did not experience this change, 5 = I experienced this change to a very great degree), a sample item was “I changed my priorities about what is important in life” (α = .96). A higher mean score of the 21 items indicated higher levels of PTG (Taku and McDiarmid, 2015).

RISC

A 11-item scale was used to assess a person’s tendency to include significant others in his or her own self-definition (Cross et al., 2000). The scale was reliable and valid among college students (Heintzelman and Bacon, 2015). Participants reported how they agreed with the items on a 7-point Likert-type scale (1 = strongly disagree, 7 = strongly agree). A sample item was “When I think of myself, I often think of my close friends or family also” (α = .89). A higher mean score of all items indicated a higher level of RISC.

Social support seeking

The four items from the Use of Emotional Support and the Use of Instrumental Support subscales from the Brief Coping Orientation to Problems Experienced (COPE; Carver, 1997) was used to measure participants’ frequency of seeking social support when dealing with negative life events. This scale was valid and reliable among college students (Deatherage et al., 2014). On a 4-point Likert-type scale (1 = I haven’t been doing this at all, 4 = I’ve been doing this a lot), a sample item was “I’ve been getting comfort and understanding from someone” (α = .88). A higher mean score indicated more frequent support seeking from others.

Optimism

The Revised Life Orientation Test (LOT-R; Scheier et al., 1994) was used to measure participants’ optimism. This scale was reliable and valid among college students (Renshaw et al., 2016). Respondents indicated their level of agreements with the statements on a 5-point scale (0 = strongly disagree, 4 = strongly agree). A sample item was “Overall, I expect more good things to happen to me than bad” (α = .79). A higher mean score of the items indicated a higher level of optimism.

Emotional expression

Participants also completed the emotional expression subscale (eight items) from the Emotional Approach Coping Scale (EAC; Austenfeld and Stanton, 2004) on a 4-point scale (1 = I usually don’t do this at all, 4 = I usually do this a lot). A higher mean score of the items (e.g. “I take time to express my emotions,” α = .96) indicated more frequent use of emotional expression for coping with stress. The scale was reliable among college students and positively associated with adjustment outcomes (Juth et al., 2015). The Cronbach’s alpha was .96 in this sample.

Previous experience of traumatic events

Participants’ experience of different types of traumatic events was measured by the Vrana–Lauterbach Traumatic Events Scale—Civilian (Lauterbach and Vrana, 1996). We measured whether the participants had experienced the particular types of events listed and how traumatic they currently felt for those events (on a 7-point scale, 1 = not at all traumatic, 7 = severely traumatic) (refer to Table 1). This scale was shown to be valid in college samples such that those having experienced more traumatic events reported more psychological symptoms (Boals and Ruggero, 2016).

Table 1.

Participants’ exposure to traumatic events (N = 454).

	Frequency (%)
Number of types of traumatic events experienced
1–2 types	323 (71.1)
3–4 types	108 (23.8)
5 types or more	23 (5.1)
Types of traumatic events	Experienced^a	Rated as most traumatic^a
Witnessed a serious accident (e.g. industrial, farm, car, fire, and explosion)	111 (24.4)	52 (11.5)
Been in a natural disaster (e.g. tornado, hurricane, flood, and earthquake)	261 (57.5)	107 (23.6)
Been a victim of violent crime (e.g. rape, robbery, and assault)	63 (13.9)	40 (8.8)
Been a victim of either physical or sexual abuse as a child	53 (11.7)	33 (7.3)
Had unwanted sexual experiences involving threat or use of force as an adult	30 (6.6)	19 (4.2)
Been in a relationship that involved being abused physically or otherwise	59 (13.0)	37 (8.1)
Witnessed someone being mutilated, seriously injured, or violently killed	18 (4.0)	7 (1.5)
Been in a serious danger of losing life or being seriously injured	54 (11.9)	36 (7.9)
Received news of mutilation, injury, or unexpected death of someone close to you	121 (26.7)	87 (19.2)
Had traumatic experiences like these that you feel you can’t tell anyone	36 (7.9)	25 (5.5)
Other very traumatic events (e.g. medical surgery, changing religion, parents getting divorced, and hospitalized due to illness)	149 (32.8)	135 (29.7)

Participants might select more than one type of traumatic events if applicable, thus the total frequencies did not add up to the sample size (N = 454).

Analytic plan

Descriptive statistics (including means and SDs) and bivariate correlations of the major variables were computed. Missing data were found in less than 2% in the major psychological variables and therefore were imputed by an expectation–maximization algorithm in SPSS 22.0. Path analyses (conducted by AMOS 22.0) were used to evaluate the fitness of the hypothesized model with observed variables and maximum likelihood estimation method. A satisfactory model fit was indicated by a chi-square value with a non-significant p-value (Kelloway, 1998), a root mean square error of approximation (RMSEA) ⩽ 0.08 (Steiger, 1990), and a comparative fit index (CFI) and incremental fit index (IFI) ⩾ 0.95 (Hu and Bentler, 1999). With a relatively large sample size (N = 454), we did not use the statistical significance for the chi-square as the primary indicator to evaluate the model fit, as chi-square was sensitive to sample size.

To ensure the stability of the path coefficient estimates, the mediation model analysis was also supplemented with 2000 bootstrap replications. Significance of the indirect effects was examined by the 95% bias-corrected confidence intervals (CIs) after bootstrapping. CIs were computed based on the 2000 estimates of the indirect effect bootstrap samples. The highest and lowest 2.5% of the indirect effect estimates determined the CIs. A significant indirect effect was supported if the 95% CIs did not include zero. Kline (2011) recommended that 20 observations per parameter would provide sufficient statistical power for the path analysis. With 19 parameters in the model (G*Power 3.1.2), a sample of 454 was able to detect small-to-medium effect sizes at a power of .80 (using p = .05 as the significance level).

Results

Prior traumatic experience

Participants’ prior exposure to traumatic events was different, with the most commonly experienced events as being in a natural disaster (e.g. tornado, hurricane, flood, or earthquake; 57.5%), witnessing a serious accident (24.4%), being in an abusive relationship (13%), and being in serious danger of losing life (11.9%). Among the participants, 28.9% had experienced more than two types of negative events (Table 1).

Correlation analysis and path analyses

As hypothesized, RISC, optimism, social support seeking, and emotional expression were positively correlated with PTG (rs = 0.24–0.43, ps < .001) (Table 2). Path analyses were conducted to examine whether emotional expression and social support seeking mediated the relationships between individual differences variables (optimism and RISC) and PTG. The proposed model showed a good fit in predicting PTG (model 1: χ²(4) = 11.05, p = .026, CFI = 0.98, IFI = 0.98, RMSEA = 0.06). All proposed paths were statistically significant except for the path from optimism to social support seeking (β=0.06, p>.05). Specifically, the direct effects from optimism to PTG(β=0.15, p<.001) and from RISC to PTG (β=0.13, p<.01) were still significant after considering the mediators. To test a more parsimonious model, we tested another model with the removal of the path from optimism to social support seeking. This revised model showed a good fit in predicting PTG (model 2: χ²(5) = 12.85, p = .025, CFI = 0.98, ILI = 0.98, RMSEA = 0.06) with a non-significant chi-square change from the hypothesized model (Δχ²(1) = 1.80, p > .05) and hence considered as the final model (Figure 1). The associations among the variables did not change even after controlling for current distress due to the stressful event (significant demographic variable). The overall model explained 29% of variance in PTG.

Table 2.

Descriptive statistics and correlations among major variables (N = 454).

	1	2	3	4	5	6	7	8
1. PTG	–
2. Gender^a	−.11*	–
3. Prior traumatic events^a	.05	−.02	–
4. Current distress^a	.13**	−.11*	.41***	–
5. RISC	.28***	−.04	−.04	.05	–
6. Optimism	.24***	.10*	−.02	−.11*	.19***	–
7. Social support seeking	.43***	−.08	.03	.10*	.28***	.11*	–
8. Emotion expression	.39***	−.14**	.01	.02	.20***	.22***	.39***	–
Mean	3.09	1.13	2.10	3.20	5.11	2.37	2.57	2.56
SD	1.18	0.34	1.29	1.92	1.13	0.74	0.84	0.84
Cronbach’s α	.96	N/A	N/A	N/A	.89	.80	.88	.96

PTG: posttraumatic growth; RISC: relational-interdependent self-construal; SD: standard deviation; N/A: not applicable.

Gender: female (1) and male (2); prior traumatic events: number of prior traumatic events experienced; current distress: current distress due to the most traumatic event.

p < .05; ** p < .01; *** p < .001.

Figure 1.

A path model illustrating the relationships among individual differences (relational-interdependent self-construal and optimism), coping strategies (emotional expression and social support seeking), and posttraumatic growth.

Partial mediation effects of emotional expression and social support seeking were supported. Specifically, the indirect effects from optimism to PTG via emotional expression (β = 0.04, p < .001), from RISC to PTG via emotional expression (β = −0.04, p < .001), and from RISC to PTG via social support seeking (β = 0.08, p < .001) were statistically significant (Figure 1). Results from bootstrapping supported the presence of a partial mediation effect, as both the indirect effect from optimism to PTG via emotional expression (β = 0.04, p = .001; 95% CI = 0.02, 0.06) and indirect effects from RISC to PTG via emotional expression and social support seeking (β = 0.12, p = .001; 95% CI = 0.09, 0.15) were greater than zero in the 95% CIs. These results suggested that RISC was associated with PTG through increased emotional expression and social support seeking, whereas optimism was associated with PTG through increased emotional expression only. After bootstrapping, the direct effects from optimism to PTG (β = 0.15, p = .001, 95% CI = 0.08, 0.21) and from RISC to PTG (β = 0.13, p = .001, 95% CI = 0.07, 0.18) were also found to be significant, suggesting that optimism and RISC still contributed to the variance of PTG significantly after considering the mediators.

Discussion

Researchers proposed that the associations between coping processes and PTG could vary based on people’s individual differences (Vázquez et al., 2014). This was an early attempt to explore how optimism and RISC may associate with PTG through coping mechanisms. Social support seeking partially mediated between RISC and PTG; emotional expression partially mediated both the associations between optimism and PTG and between RISC and PTG.

Optimism and PTG: mediated by emotional expression but not social support seeking

Consistent to a previous review (Prati and Pietrantoni, 2009), our findings indicated that optimism was associated with PTG. We contributed to the literature by revealing one of the possible mechanisms through which optimism facilitates PTG. It has been assumed that optimism is always associated with people’s well-being through approach coping strategies (Carver and Scheier, 2014), which was consistent with our findings that optimism was positively correlated with both emotional expression and social support seeking. However, to look at it more deeply, our mediation model suggested that optimism could facilitate PTG only through increasing emotional expression, but not through social support seeking.

Scholars have also suggested that optimistic individuals tend to match their coping strategies with the characteristics of the situations using more problem-focused coping (e.g. seeking social support) for controllable stressors and adaptive emotional-focused coping for uncontrollable stressors (e.g. trauma) (Bonanno et al., 2011; Carver and Scheier, 2014; Nes and Segerstrom, 2006). It is possible that optimistic individuals learn to incorporate emotional expression into goal pursuit in the context of trauma adjustment. Consistent with this, Costello (1998) also found that social support seeking did not mediate between optimism and posttraumatic stress symptoms among people exposed to Hurricane Andrew. Extending from our findings, more research is warranted to examine whether optimism facilitates PTG through increased emotional approach coping strategies rather than interpersonal approach coping strategies.

RISC and PTG: mediated by social support seeking and emotional expression

To the best of our knowledge, this was one of the first studies indicating that RISC was associated with PTG. Our mediation model also suggested that that RISC was associated with more social support seeking and emotional expression, which further facilitated PTG. Previously, Du and King (2013) have found that relational self was related to external locus of hope from family and friends, which in turn predicted adjustment outcomes (e.g. life satisfaction). Another study found that those greater in RISC experienced great higher self-confidence when significant others (e.g. close relationship partners) were primed during the experiment (Gabriel et al., 2007). Such self-confidence may motivate people to emotionally disclose deeper feelings to their significant others, making them worrying less about the events’ potential consequences (Do Couto and Hennig, 2015; Morry and Kito, 2009; Wills and Petrakis, 2018). RISC may function as a facilitator for both interpersonal and emotional approach coping strategies, which could result in more PTG. As an extension from this study, future research could also explore the other mediating coping variables between RISC and PTG, plus examine whether training people’s skills in seeking support could increase their PTG. Given that RISC could be primed through experiments (Gabriel et al., 2007), it is worth exploring whether reminding people about their significant others through interventions may facilitate their willingness to seek social support and express trauma-related emotions.

Limitations

This study had several limitations. First, this study tested the mediation model based on cross-sectional data, which limited the exploration of temporal relationships between the variables. Examining the longitudinal relationships between individual differences, changes in coping variables, and PTG at multiple time points (e.g. cross-lagged panel design) was recommended for future studies. Second, similar to other studies recruiting undergraduate populations (Moore et al., 2017; Owens, 2016), this sample consisted of more females than males. It could only provide a limited variability to examine whether gender plays a significant role in PTG-related processes. However, we believed our sample provided the cultural and trauma-event-related variabilities to examine novel hypotheses as a valuable first step. Third, the mediation model only explained a moderate proportion of variance in PTG, implying that other important variables may need to be considered. Studies have suggested that centrality of the traumatic event (higher PTG among people incorporated the event into personal identity) and coping flexibility (higher PTG among those who could flexibly use different types of coping strategies) are also important determinants of PTG (Kunz et al., 2018; Wamser-Nanney et al., 2018). Considering those may explain additional variance in PTG.

Implications

This study had strong implications to advance our understanding in how pre-trauma and post-trauma factors contribute to PTG. Future studies may extend to understand how the interplay between these individual differences and coping strategies contribute to people’s PTG (Jayawickreme and Blackie, 2014). For example, the linkage between RISC and self-compassion (i.e. being discerning and gentle toward oneself in face of hardship or perceived inadequacy) was examined. RISC was associated with different aspects of self-compassion (e.g. self-kindness, less self-judgment, and mindfulness; Akin and Eroglu, 2013), whereas self-compassion was found to be associated with more cognitive processing and higher PTG (Wong and Yeung, 2017).

Even though optimism is generally regarded as a relatively stable individual characteristic, researchers have found that optimism could be enhanced in medium effect size through psychological interventions (Hedge’s g = 0.41; Malouff and Schutte, 2017). Based on our findings, increasing optimism may facilitate more frequent emotional expression, which in turn enhances PTG. Similarly, how PTG can be enhanced through interventions has received growing empirical attentions. A recent meta-analysis evaluated the effects of 12 randomized controlled trials of psychosocial interventions on PTG among trauma-exposed populations. It found that those interventions increased people’s PTG in medium effect sizes (Roepke, 2015). Accumulating these findings could help to tailor interventions based on people’s individual characteristics to maximize their PTG in the long run.

Footnotes

Declaration of conflicting interests

The author(s) declared no potential conflicts of interest with respect to the research, authorship and/or publication of this article.

Funding

The author(s) received no financial support for the research, authorship, and/or publication of this article.

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