Modern WisdomThe Evolutionary Psychology Of Anxiety & Depression - Ed Hagen
At a glance
WHAT IT’S REALLY ABOUT
Evolutionary roots of depression, suicide, strength, and music explained
- Ed Hagen applies evolutionary psychology to reframe depression, suicidality, postpartum depression, and even music as potentially adaptive responses to adversity rather than mere malfunctions. He argues that depression is analogous to physical pain—an evolved form of “psychic pain” that halts harmful behavior, forces deep problem-solving (rumination), and signals need to others. He presents data suggesting that the apparent sex difference in depression is largely a strength difference, with physical formidability influencing who prevails in social conflicts and thus who is more likely to become depressed. Hagen also proposes that most suicide attempts and postpartum depression function as costly, credible signals of need, and that music and synchronized performance evolved as honest signals of coalition quality.
IDEAS WORTH REMEMBERING
5 ideasReframe depression as extreme sadness serving problem-solving and signaling functions.
Hagen suggests depression is akin to physical pain: it is triggered by serious adversity, forces you to stop what you’re doing, focus intensely on what went wrong (rumination), and can prompt learning and behavioral change to avoid similar threats in the future.
Recognize that depression strongly tracks adversity, especially unclear, high-stakes problems.
Depression is most likely when events severely threaten survival/reproduction (loss of partner, job, health, social status) and when the solution is not obvious, necessitating prolonged cognitive effort and withdrawal from other activities.
Consider physical strength as a buffer against depression via conflict outcomes.
Using large national datasets, Hagen’s group finds that when controlling for upper-body strength, sex differences in depression largely disappear; stronger individuals of both sexes are less likely to be depressed, plausibly because they more often prevail in social conflicts.
View many suicide attempts as costly signals to elicit support, not true ‘fitness maximization’ failures.
Because most attempts do not result in death (especially in women), Hagen argues suicidality frequently functions as an honest signal of severe need during conflict or abuse, convincing skeptical social partners to intervene—though some signals tragically overshoot and become lethal.
Interpret postpartum depression in the context of support and child viability.
Postpartum depression strongly correlates with low partner/family support or mother/infant health problems. From an evolutionary lens, this psychic pain and withdrawal can signal that current conditions may be inadequate to raise the child, pressuring kin to provide more help or prompting tough reproductive decisions.
WORDS WORTH SAVING
5 quotesWe should really think of depression probably as an extreme form of sadness, or what Randy Thornhill and others have called psychic pain.
— Ed Hagen
Our hypothesis was that the sex difference in depression is really a strength difference, not a sex difference.
— Ed Hagen
For the vast majority of suicidal behavior, the phenomenon of interest is the suicide attempt, and the deaths are the unintended, accidental consequences of making a serious signal.
— Ed Hagen
Many, many cases of postpartum depression are occurring in contexts where mothers feel they don't have social support… and that would have been a cue ancestrally that this child isn't going to make it.
— Ed Hagen
If we rule out telling stories, then science dies.
— Ed Hagen
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