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Teens and Docs Abstain from Sex Talk

In annual physicals teens and docs failed to talk sex a third of the time and usually too briefly when the subject was addressed. Dina Fine Maron reports

December 31, 2013

The Ups and Downs of Sex

A new analysis of fetal records shows that the chances of finding a boy or a girl at conception start out at 50–50 and then change over the course of pregnancy

October 1, 2015 — Kat Long

First Sex Alters Body Image

A recent assessment of undergrads reveals a gender difference in how the students see their bodies after their first sexual intercourse. Christie Nicholson reports

March 27, 2011

Sex Differences in Jealousy

Recent research attempts to provide a more nuanced look at the long-held view that men are more jealous of sexual infidelity than emotional infidelity. Christie Nicholson reports

January 28, 2010

His Brain, Her Brain

It turns out that male and female brains differ quite a bit in architecture and activity. Research into these variations could lead to sex-specific treatments for disorders such as depression and schizophrenia

May 1, 2005 — Larry Cahill

Why Do Men Buy Sex?

Some researchers say johns seek intimacy on demand; others believe these men typically want to use and dominate women

December 1, 2008 — Nikolas Westerhoff

Sex Differences in Cells

The chromosomes differ in males and females. So do certain other structures in cell nuclei. These distinctions are clues to the processes that determine the divergence of the sexes

July 1, 1963 — Ursula Mittwoch

Editor’s Selections: Death and Sex, Death and Football, Death and Chimpanzees

Here are my Research Blogging Editor’s Selections for this week: Let’s start out with something particularly morbid (though potentially the best lede ever): “What effect do thoughts of death have on a typical person’s desire for sex?” This fascinating post by Christian Jarrett of BPS Research Digest asks, when is death an aphrodisiac?

February 8, 2011 — Jason G. Goldman
Disarming Cupid: Love, Sex and Science

Disarming Cupid: Love, Sex and Science

Since the musicians can't seem to decide whether Love Will Keep Us Together or Love Is a Battlefield, maybe it's time to turn elsewhere. Scientists are just as fascinated by affairs of the heart, and here we examine romance research that uses fMRI studies and other tools.

February 11, 2013

Do Gay Animals Change Evolution?

Animals that engage in same-sex sexual behavior may be acting in accord with adaptational strategies rather than against them--and bending the way we think about evolution

June 16, 2009 — Katherine Harmon