This study aimed to identify the relationship between ACEs, prosocial behavior, and depression in an adolescent population from urban schools in low-resourced neighborhoods. Many adolescents had been exposed to four or more ACEs, and almost one out of every five teenagers were classified as having a low or very low results in prosocial behavior. The main finding was ACEs were significantly associated with the selected outcome when controlling for confounding variables (well-being, satisfaction with life, family functioning), but prosocial behavior was not associated to ACEs and did not significantly modify their effect on depression. The distribution of all the other variables was consistent with a high-risk urban population, but those data are not shown in this manuscript as they were used as part of the models to control for confounding variables.
Similar association between ACEs, prosocial behavior and mental health outcomes have been documented in several studies. One study identified that adolescents exposed to 8 or more ACEs were more likely to report depression (three times the odds) and post-traumatic stress disorder (four times the odds) than those exposed to 0–3 ACEs (37). Another study conducted an umbrella review of systematic reviews and meta-analyses to identify the association of key ACEs and mental disorders; they found a two-fold increase of suicidality, anxiety disorders, depression, and internalizing disorders (38). Specifically on the topic of suicidality, others found a three-fold increase in rates of suicidal ideation and suicide attempts for adults exposed to three or more ACEs (39). Prosocial behavior has not been as extensively evaluated as ACEs, but there is a meta-analysis for childhood, adolescence, and young adulthood where the authors report and expected association of higher prosocial behaviors with a lower degree of psychopathology (40). The effect size of those associations is like our findings, but ACEs and prosocial behavior have been evaluated separately.
Other studies have found a significant association between depression and prosocial behavior, but they do not include all relevant variables. For example, a statistically significant association between high levels of depression and low levels of both prosocial behavior and resilience was found (41). However, this study did not measure/control confounding variables beyond some demographics and the three main variables. There are other studies that show association between adversity and prosocial behavior (42), showing a statistically significant association between child maltreatment and prosocial behavior, and empathy and gratitude as significant mediators in that association. Nevertheless, that study did not measure psychopathology or any other variables besides demographics and the aforementioned.
We were able to identify at least two other studies that measured both ACEs, prosocial behavior and psychopathology. Bevilacqua et al. (2021) evaluated the association between ACEs, psychopathology and prosocial behavior (14), using the parent-version of the SDQ at ages 3, 5, 7, 11 and 14. The authors found that a higher number of ACEs predicted worse mental health and prosocial outcomes, which were evident by age 3 and persisted until adolescence. This study shows many strengths as it can evaluate the longitudinal relationships between these three areas, their models control for gender, ethnicity, and poverty, and they tested for the effect of specific types of adversity on internalizing and externalizing psycopathology (14). There is another study that evaluated aggressive behavior and prosocial skills in children exposed to intimate partner violence through preschool and early-school years; their results indicated that there was a cross-domain relation between aggressive behavior problems and prosocial skills, exacerbated by early intimate partner violence exposure (43). Preschool-age aggressive behavior negatively influenced prosocial skills development during the early school years. Moreover, preschool-age intimate partner violence exposure was linked to decreased early school-age prosocial skills and increased aggressive behavior problems (43).
Despite the differences in the measures used across studies, it is remarkable how exposure to ACEs and prosocial behavior levels are similar across studies. In a Brazilian study, 33.3% of the 15–19-year-old high school students reported four or more ACEs (44), and 72% of adolescents aged 10–16 years in Malawi reported the same (37). As for the levels of prosocial behavior found in our sample, they are also comparable to those found in similar studies. For example, in a study from Honduras, the authors found a mean score of 7.93 (SD 1.91) in the prosocial behavior subscale of parent-version SDQ (45), and authors in China reported a mean score of 7.24 (SD 2.19) using the same instrument (46). The concordance in ACEs prevalence and prosocial behavior levels with other studies means our results could be valid in adolescents living under different conditions.
Exposure to early adversity plays a key role in depression and other mental health outcomes among adolescent population, and its effects may not be alleviated by the presence or positive mental health constructs like prosociality. When generating models for understanding the complex phenomenon of mental health, these findings support that they should consider multiple variables and their interactions, even more so in the developmental process of children and adolescents. Models generated within the ecological framework could help to better understand the interaction of factors at different levels as well as to help design and carry out effective programs for prevention of mental disorders. As some variables are not modifiable, such as age, sex, and exposure to ACEs, interventions could be directed to improve adolescents' well-being and health by enhancing factors like satisfaction with life, family functionality, and prosocial behavior. That approach might seem logical but may not be the most efficient way to address the problem. Participant charter schools in this study could prioritize their needs and focus their resources on an optimal way for different profiles of their students.
As with any cross-sectional study, our project has some limitations. The measurement of prosocial behavior was performed with a subscale of the SDQ (a screening instrument for general psychopathology); there are other scales that are specifically designed to measure that construct, and they could be considered more thorough, such as the Prosociality Scale (47). Its reduced version has been used in Colombian (48), Argentinian (49) and Japanese (50) adolescents; however, it is designed for young adults (51). There is a widespread need for locally validated measures that allow comparison between populations using the same instruments. Besides, this study has weaknesses inherent to cross-sectional studies, such as the inability to measure incidence, difficulty in making causal inferences, associations that are difficult to interpret, and susceptibility to non-response from the participants. Nonetheless, our response rate was remarkably high in comparison to similar studies on school mental health, and a high response rate allowed us to reduce errors in the estimation of the associations found. Recall bias might be another issue as we asked retrospectively about ACEs using questions adapted from standardized measures available in other studies (52). This is an inevitable limitation, but longitudinal follow-up and assessment of ACEs would be costly in many ways as well. Our instrument captured 19 different ACEs and was reviewed by experts and members of the schools’ communities to ensure it would be appropriate for adolescents. We adapted questions from multiple questionnaires to assess as many ACEs as possible. There are many instruments available as adversity measures, but few of them have been tested in Colombian adolescents (52, 53).