Cognitive Effects of and CMV Infections: A Cross-Sectional Study of 557 Young Adults Considering Modulation by Sex and Rh Factor.

One-third of humanity harbors a lifelong infection with , and probably about 80% are infected with human cytomegalovirus (CMV). This study aims to delineate the associations between toxoplasmosis and cognitive abilities and compare these to the associations with CMV. We evaluated the cognitive performance of 557 students, who had been examined for and CMV infections, using intelligence, memory, and psychomotor tests.

Lower performance of Toxoplasma-infected, Rh-negative subjects in the weight holding and hand-grip tests.

Background: Toxoplasma, a protozoan parasite of cats, infects many species of intermediate and paratenic hosts, including about one-third of humans worldwide. After a short phase of acute infection, the tissue cysts containing slowly dividing bradyzoites are formed in various organs and toxoplasmosis proceeds spontaneously in its latent form. In immunocompetent subjects, latent toxoplasmosis was considered asymptomatic.

Differences in cognitive functions between cytomegalovirus-infected and cytomegalovirus-free university students: a case control study.

Cytomegalovirus (CMV) is the herpetic virus, which infects 45-100% people worldwide. Many reports suggest that CMV could impair cognitive functions of infected subjects. Here we searched for indices of effects of CMV on infected subjects' intelligence and knowledge.

Perceived intelligence is associated with measured intelligence in men but not women.

Background: The ability to accurately assess the intelligence of other persons finds its place in everyday social interaction and should have important evolutionary consequences.

Methodology/principal Findings: We used static facial photographs of 40 men and 40 women to test the relationship between measured IQ, perceived intelligence, and facial shape. Both men and women were able to accurately evaluate the intelligence of men by viewing facial photographs.