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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.

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Tobacco Use Linked to Higher Depression and Anxiety

Adolescents who use e-cigarettes or conventional tobacco products are significantly more likely to report symptoms of depression and anxiety than non-users, a new study finds. Researchers analyzed data from over 60,000 U.S. middle and high school students surveyed between 2021 and 2023.

Inflammation Influences Cannabis’s Effects on Anxiety and Sleep

A new study shows that inflammation levels influence how cannabis affects anxiety and sleep quality. Researchers found no overall change in inflammatory markers after 4 weeks of cannabis use, but baseline inflammation moderated outcomes.

Tickling Strengthens Bonding Through Oxytocin Pathways

A new study reveals how pleasant touch fosters social bonds between humans and rats by activating oxytocin signaling in the brain. Researchers found that repeated tickling of rats increased their vocalizations, preference for human interaction, and oxytocin receptor expression in the VMHvl region.

COVID Stress May Have Aged Brains Faster

Living through the Covid-19 pandemic may have accelerated brain ageing, even in people who were never infected, a new study finds. Brain scans of nearly 1,000 adults showed older, male, and disadvantaged individuals were most affected.

Why the Psychopathic Brain Struggles With Emotion and Control

New research reveals how structural brain connectivity shapes psychopathic traits and externalizing behaviors. Using advanced connectome modeling, scientists identified two key networks: one tied to impaired emotional processing, the other to poor attentional control.

Most Mental Illnesses Arise Without Family History

A massive Danish study shows that most mental illnesses—like schizophrenia, bipolar disorder, and depression—occur in people with no close family history of the condition. Analyzing data from over 3 million individuals, researchers found that while heredity increases risk, most diagnosed individuals do not have affected relatives.

Optimists’ Brains “Think Alike” When Imagining the Future

Optimists’ brains show strikingly similar patterns when imagining the future, while pessimists’ brains display more individual variability, a new study reveals. Using fMRI, researchers found that optimists process positive and negative scenarios in distinct, shared ways, which may explain their greater social connectedness.

Autism Masking Leaves a Mark on the Brain

Some autistic teens mask their traits to “pass” as non-autistic in social settings, but a new study reveals the hidden cognitive toll. Using EEG, researchers found these teens show faster automatic responses to faces and dampened emotional reactivity, suggesting their brains may adapt to cope with social demands.

This shows a pregnant woman and gut bacteria.

Pregnancy Stress Disrupts Baby’s Microbiome, Increasing Depression Risk

Prenatal stress in mothers can leave a lasting imprint on their offspring, predisposing them to depression-like behaviors. Researchers found that maternal stress disrupts the gut microbiome and metabolite production, which are vertically transmitted to the young.

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FoMO and Dark Personalities Drive Online Political Engagement

A large cross-national study examined how psychopathy, narcissism, fear of missing out (FoMO), and cognitive ability influence online political participation. Across eight countries, people high in psychopathy and FoMO consistently engaged more in digital political activities, while narcissism predicted participation only in some contexts.

Genetic Link Between Cannabis Use Disorder and Mental Health

A large genetic study reveals that cannabis use disorder (CanUD) is strongly linked to increased risk for multiple psychiatric disorders, including depression, PTSD, ADHD, and schizophrenia. By analyzing global and local genetic correlations, colocalization, Mendelian randomization, and structural equation modeling, researchers showed CanUD has distinct genetic signatures compared to casual cannabis use.

More Than Serotonin: How Psychedelics Engage the Whole Brain

Classical psychedelics like LSD, psilocybin, and mescaline are known for activating the 5-HT2A serotonin receptor, but a new study reveals their effects go far beyond. Researchers profiled 41 psychedelics against over 300 human receptors and found potent activity at serotonin, dopamine, and adrenergic sites.