The key finding
Researchers analyzing 100 studies with 138,365 participants found strong support for a specific psychological pathway leading to suicidal thoughts: people who experience feelings of defeat tend to develop a sense of entrapment, which is then linked to suicidal ideation. This 2024 systematic review examined the integrated motivational-volitional (IMV) model—a framework that maps how certain mental states progress toward suicide risk. While the defeat-to-entrapment-to-ideation sequence showed consistent patterns across studies, evidence was mixed when researchers tried to predict which people would move from thinking about suicide to actually attempting it, especially in studies that followed people over time or controlled for multiple variables simultaneously.
What the study looked like
This was a systematic review, meaning researchers gathered and analyzed existing published studies rather than collecting new data. They searched five major databases (PsycINFO, EMBASE, PubMed, Web of Science, and Google Scholar) through March 2023 for any study that empirically tested the IMV model of suicidal behavior. After screening, they included 98 published records representing 100 individual studies. These studies collectively involved 138,365 participants across various age groups and settings. The included studies used different designs: some compared people with no suicidal thoughts to those with ideation or those who had attempted suicide (case-control studies), while others followed participants over time (prospective studies). The research team assessed study quality using the National Institute of Health assessment tool and found the studies generally received good quality ratings.
Why researchers think this happened
The IMV model proposes that suicide risk develops through distinct phases. In the motivational phase, certain triggers and background factors lead to feelings of defeat (feeling like you’ve failed or lost status), which then creates a sense of entrapment (feeling stuck with no escape). This trapped feeling is what the model identifies as the primary driver of suicidal thinking. The volitional phase then involves factors that might push someone from thinking about suicide to acting on those thoughts. The review authors suggest the defeat-entrapment pathway showed consistent support because it represents a fundamental psychological experience—when people feel simultaneously defeated and unable to escape their circumstances, suicidal thoughts emerge as a perceived solution. The mixed results for predicting who moves from ideation to attempt likely reflect the complexity of that transition, which may involve different factors like impulsivity, access to means, or social modeling that weren’t consistently measured across studies.
How to read this carefully
This review has important limitations to consider. First, it synthesized observational studies, many of which were cross-sectional snapshots rather than following people over time—making it impossible to definitively say defeat causes entrapment or that entrapment causes suicidal thoughts. The association could work differently or involve unmeasured third factors. Second, the 100 studies examined many different variables but rarely the same combinations, making it difficult to draw firm conclusions about which specific background factors or moderators matter most. Third, most studies looked at the pathway to suicidal thinking rather than suicide attempts or deaths, leaving the transition from thought to action less well understood. Finally, the participants came from diverse populations, but we don’t know if these patterns apply equally across all cultural contexts, age groups, or types of life difficulties.
What this means for everyday life
This research suggests that the combination of defeat and feeling trapped represents a particularly concerning psychological state worth taking seriously. If you notice someone—or yourself—expressing both that life feels like a series of failures and that there’s no way out of current circumstances, this review suggests that’s a pattern linked to increased suicide risk. It might be worth gently exploring whether professional support could help. For those supporting others, the framework suggests that interventions addressing either the sense of defeat (helping someone reframe setbacks) or the feeling of entrapment (identifying previously unseen options or paths forward) could potentially disrupt this pathway. The research doesn’t prove that addressing these feelings prevents suicide, but given the consistent association across 138,000+ participants, recognizing this defeat-entrapment pattern could be valuable in conversations about mental health.