Latest

Psychology News

These research articles involve many aspects of psychology such as cognitive psychology, depression studies, mental health, stress, happiness and neuropsychology, Scroll below for more specific categories.

Brain’s Arousal Regulator Found

A new study reveals that a small cluster of cells near the brain's "blue spot"—the locus coeruleus—helps regulate arousal, attention, and stress responses. These peri-LC neurons modulate the locus coeruleus by releasing GABA, which reduces its activity and dampens the release of norepinephrine.

This shows a brain and a person sleeping.

Excessive Sleep May Hurt Cognitive Function

Sleeping more than nine hours a night may be detrimental to brain health, particularly for individuals experiencing symptoms of depression, according to a new study. Researchers analyzed data from nearly 2,000 dementia-free adults and found that long sleep duration was associated with worse performance in memory, visuospatial ability, and executive function.

AI’s Spontaneously Develop Social Norms Like Humans

Large language model (LLM) AI agents, when interacting in groups, can form shared social conventions without centralized coordination. Researchers adapted a classic “naming game” framework to test whether populations of AI agents could develop consensus through repeated, limited interactions.

This shows an older woman sitting alone.

Loneliness Linked to 24% Higher Risk of Hearing Loss

A new study tracking nearly half a million participants over 12 years has revealed a strong, independent link between loneliness and an increased risk of hearing loss. Even after adjusting for genetic risk, health conditions, and lifestyle factors, lonely individuals had a 24% higher chance of developing hearing loss, especially sensorineural types.

The Brain Learns to Fear Through Inference, Not Just Experience

A new study reveals how rats can learn to fear through inference, offering insights into the neural basis of higher-order emotions. By pairing a neutral sound and image, then associating the image with an unpleasant experience, researchers showed that rats later feared the sound alone—demonstrating inferred emotional learning.

Incel Culture Links Work Avoidance to Group Loyalty

A new study reveals that many self-identified incels reject employment not only due to mental health challenges, but as a deliberate expression of identity reinforced by online communities. By analyzing over 1,200 forum posts, researchers found that incel spaces often celebrate unemployment and isolation as signs of ideological purity, pressuring others to remain disengaged from work or education.

Stress of Long Work Hours May Physically Alter the Brain

Preliminary research suggests that working more than 52 hours per week may physically alter brain regions involved in emotional regulation, memory, and decision-making. MRI scans from healthcare workers revealed increased grey matter volume in key areas like the middle and superior frontal gyri and the insula.

This shows a brain and people looking with disgust at a steak.

Disgust, Not Taste, Drives Vegetarian Meat Avoidance

A new study finds that vegetarians reject meat with the emotion of disgust, rather than simple distaste, mirroring the strong aversion meat-eaters feel toward taboo foods like human flesh or feces. In contrast, disliked vegetables like beets or sprouts are typically rejected due to distaste—an aversion based on taste or texture.

New Insights Into Why Stress Is So Hard to Treat

A new review reveals key differences in how stress hormone systems function in primate versus rodent brains, offering insight into why treatments for stress-related disorders often fail in humans. Researchers found that corticotropin releasing factor (CRF) interacts with dopamine circuits in more complex and widespread ways in primates, with dopamine neurons often releasing multiple neurotransmitters.

Chronic Illness Combinations Double Depression Risk

A new study reveals that people with multiple chronic physical conditions face a significantly higher risk of developing depression, especially when conditions like heart disease and diabetes co-occur. Researchers analyzed health data from over 142,000 adults and found that certain multimorbidity profiles more than doubled the chance of a depression diagnosis within 10 years.

Social Status Shapes Addiction Risk Through Dopamine Circuitry

A new study reveals how social rank influences addiction vulnerability by altering dopamine pathways in the brain. Low-ranking male mice showed stronger reward signals and weaker control circuits, making them more prone to seek methamphetamine, while high-ranking mice had better balance and resistance.

Salience Network Expansion May Be A Reliable Biomarker for Depression

A newly identified biomarker—an enlarged salience network in the brain—could dramatically change how depression is detected and treated. This network, responsible for regulating attention and switching between mental states, was found to be consistently larger in people with depression, regardless of symptom severity or treatment history.