You can't reduce your way out of an absence
When the capacity for pleasure dims — a condition psychiatrists call anhedonia — the consequences reach far beyond sadness, touching the very architecture of a person's will to live. A clinical trial conducted across multiple centers in the United States has found that therapy designed to rebuild positive emotional experience, rather than merely suppress distress, produces meaningfully better outcomes for adults living with moderate-to-severe depression and anxiety. The study, led by researchers at Southern Methodist University, offers a quiet but significant reorientation: that healing may begin not only by reducing what hurts, but by restoring what has gone missing.
- Anhedonia — the inability to feel pleasure — sits at the core of depression and anxiety, and its presence sharply elevates the risk of suicide, making effective treatment a matter of urgency.
- A randomized clinical trial pitting positive affect therapy against negative affect therapy found that directly training the brain's reward systems outperformed the traditional focus on managing fear and distress.
- Across 98 participants receiving 15 weekly sessions, those in the positive affect group showed greater clinical improvement, and that advantage held steady a full month after treatment ended.
- The mechanism driving recovery differed between groups: subjective well-being led gains in the positive affect group, while threat-processing improvements dominated in the other — a distinction that points toward different therapeutic entry points.
- The findings suggest clinical practice may need to shift, prioritizing reward system activation earlier and more intensively for patients whose primary struggle is the absence of joy rather than the presence of fear.
Anhedonia is more than sadness — it is an absence, a flattening of the reward system that strips ordinary life of its texture and meaning. It sits at the center of depression and anxiety, and it carries a sharply elevated risk of suicide. A new randomized clinical trial proposes a more direct way to address it: rather than focusing treatment on reducing negative emotions, build up the capacity for positive ones.
Led by Dr. Alicia E. Meuret at Southern Methodist University, the study enrolled 98 adults with moderate-to-severe depression or anxiety and severely diminished positive affect. Between late 2021 and early 2024, participants received 15 weekly individual sessions of either positive affect therapy — which trains people to recognize and amplify rewarding experiences — or negative affect therapy, which targets distressing emotions and threat responses.
The results favored the positive approach. Participants in positive affect therapy showed significantly greater clinical improvement, and the gains persisted at a one-month follow-up. Both groups showed some improvement in reward anticipation and response, but the two therapies worked through different mechanisms: in the positive affect group, subjective well-being drove recovery; in the negative affect group, reductions in threat processing did.
The distinction carries real clinical weight. For people whose suffering centers on the hollowing out of joy rather than the amplification of fear, the evidence now points toward a different therapeutic entry point — one that builds what is missing rather than only quieting what is painful. If reward system activation proves to be a central mechanism in treating mood disorders, future clinical approaches may need to engage it earlier, and more deliberately, than current practice tends to allow.
When someone stops feeling pleasure—when the things that once brought joy become flat and unrewarding—psychiatrists call it anhedonia. It's more than sadness. It's a kind of absence, a dimming of the reward system itself. And it matters urgently: anhedonia sits at the center of depression and anxiety, and it carries with it a sharply elevated risk of suicide.
A new study suggests that directly targeting this deficit—building up positive emotional capacity rather than just dampening negative feelings—produces measurably better outcomes. Researchers led by Dr. Alicia E. Meuret at Southern Methodist University in Texas conducted a randomized clinical trial comparing two approaches: positive affect therapy, which trains people to recognize and amplify rewarding experiences, and negative affect therapy, which focuses on managing distressing emotions. The hypothesis was straightforward: activating the brain's reward systems directly would prove more effective than the traditional approach of reducing threat and worry.
The trial enrolled 98 adults, averaging 32.8 years old, two-thirds of them women. All had moderate-to-severe depression or anxiety alongside severely diminished positive affect. Between December 2021 and January 2024, they received 15 weekly individual therapy sessions—51 in the positive affect group, 47 in the negative affect group. Researchers measured outcomes using standard clinical scales: self-reported positive emotion, anhedonia assessed through clinical interview, and depression and anxiety tracked via the Depression, Anxiety and Stress Scale.
The results favored the positive approach. Participants in positive affect therapy showed significantly greater clinical improvement than those in negative affect therapy. At a one-month follow-up, the advantage persisted. Both groups showed gains in how they anticipated rewards and responded to receiving them—suggesting that either approach can activate reward processing to some degree. But positive affect therapy proved superior at something subtler: the subjective measures of well-being—how people actually felt about their progress—emerged as the primary drivers of clinical improvement in that group. In the negative affect therapy group, improvements in threat processing dominated instead.
The distinction matters. It suggests that mood disorders may respond better when treatment directly engages the capacity for pleasure and reward rather than primarily targeting fear and worry. This doesn't mean negative affect therapy has no place; it clearly helps some people. But for adults struggling with anhedonia—that particular hollowing out of joy—the evidence now points toward a different entry point: building up what's missing rather than only reducing what's painful.
These findings reshape how clinicians might think about intervention. If modulating reward systems represents a crucial mechanism for treating depression and anxiety, then future approaches might prioritize this activation earlier, or more intensively, than current practice typically does. For people living with the weight of anhedonia, the implication is concrete: there may be a more direct path back to feeling.
Notable Quotes
Modulating reward systems represents a crucial therapeutic mechanism for treating mood disorders— Study findings, led by Dr. Alicia E. Meuret, Southern Methodist University
The Hearth Conversation Another angle on the story
Why does anhedonia matter so much in depression? Isn't it just one symptom among many?
It's more foundational than that. Anhedonia—the inability to feel pleasure—sits at the core of how mood disorders work. It's not just that someone feels sad; it's that nothing feels rewarding anymore. And that absence is what drives people toward suicide. It's the flatness that's dangerous.
So this study is saying that if you can restore the ability to feel reward, the depression gets better?
Not quite. It's saying that directly training people to recognize and build positive emotion works better than the traditional approach of just teaching them to manage anxiety and worry. Both activate reward systems, but positive affect therapy makes that activation the center of the work.
What's the practical difference for someone in therapy?
In negative affect therapy, you're learning to notice threats, to calm your nervous system, to reduce worry. It helps. But in positive affect therapy, you're actively practicing noticing small moments of pleasure, building capacity for reward, training your brain to anticipate and respond to good things. It's not passive.
And the study showed this actually works better?
Significantly better, yes. And the improvement held at follow-up. What surprised the researchers was that the subjective experience—how people felt about their own progress—was what actually drove the clinical gains in the positive group. It wasn't just a number on a scale.
Does this mean negative affect therapy is wrong?
No. It works for some people. But for people with severe anhedonia, it may be the wrong entry point. You can't reduce your way out of an absence. Sometimes you have to build something back up.