Family planning is hailed as one of the great public health achievements of the last century,
and worldwide acceptance has risen to three-fifths of exposed couples. In many countries …

Scientific interest in whether women experience changes across the ovulatory cycle in
mating-related motivations, preferences, cognitions, and behaviors has surged in the past 2 …

Summary The 2016 US Selected Practice Recommendations for Contraceptive Use (US
SPR) addresses a select group of common, yet sometimes controversial or complex, issues …

The replication crisis has seen increased focus on best practice techniques to improve the
reliability of scientific findings. What remains elusive to many researchers and is frequently …

This committee opinion provides practitioners with suggestions for optimizing the likelihood
of achieving pregnancy in couples or individuals attempting conception who have no …

Background Emergency contraception can prevent unintended pregnancies, but current
methods are only effective if used as soon as possible after sexual intercourse and before …

Over the past two decades, a large literature examining psychological changes across
women's ovulatory cycles has accumulated, emphasizing comparisons between fertile and …

BACKGROUND: Emergency contraception (EC) does not always work. Clinicians should be
aware of potential risk factors for EC failure. STUDY DESIGN: Data from a meta-analysis of …

American adults had sex about nine fewer times per year in the early 2010s compared to the
late 1990s in data from the nationally representative General Social Survey, N= 26,620 …

Thirty-eight normally cycling women provided daily reports of sexual interests and feelings
for 35 days. Near ovulation, both pair-bonded and single women reported feeling more …