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Influence of latent toxoplasmosis on intelligence of infected subjects
Chvátalová, Veronika ; Flegr, Jaroslav (advisor) ; Lindová, Jitka (referee)
There remain inconsistencies in the literature concerning the intelligence of subjects infected with latent toxoplasmosis. The main goals of this work are to find out whether, a) latent toxoplasmosis influences the intelligence of infected subjects and b) whether Rh negative and Rh positive subjects respond to the infection in different ways. In this work we used a complex test of intelligence, The Structure Intelligence Test I-S-T 2000 R. We were able to statistically control for the confounding variable the size of the place of residence in childhood. This had benefits when compared to previous studies. The differences in intelligence were measured in students of The Faculty of Science. The sample used included 46 toxoplasma-infected and 188 toxoplasma-free individuals. Using nonparametric tests we found lower numerical, fluid and general intelligence in toxoplasma-infected subjects compared to noninfected subjects. In addition, these tendencies were also observed in the results of parametric tests. Further to these components of intelligence there was also found to be a lower component of numerical knowledge in toxoplasma-infected males. By contrast, no differences between infected and noninfected individuals was found to occur in the female test subjects. No statistically significant...
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The relation between latent toxoplasmosis and schizophrenia
Sglundová, Markéta ; Flegr, Jaroslav (advisor) ; Holub, David (referee)
The relation between the intracellular parasite Toxoplasma gondii and schizophrenia was studied and confirmed in several studies. There are proofs that latent toxoplasmosis deteriorates the course of schizophrenia. The goal of this study was to clarify whether there are differences between subjectively perceived quality of life of infected and non-infected psychiatric patients. We tested men and women from the PCP treated for the diagnosis of schizophrenia, who undertook serology blood tests for detection of anamnestic T. gondii antibodies. Patients also filled out two questionaires that assessed subjectively perceived quality of life - SOS-10 and WHOQOL-BREF. Patients filled out these questionaires twice, both at the start of the study before coming to psychiatric therapeutical institution and after one year. During the first testing were the questionaires filled out by 171 persons, after one year by 108 persons. Based on the results of these tests we found out that latent toxoplasmosis had a negative impact on subjectively perceived quality of life of schizophrenia patients, particularly on infected women. On the other hand, the quality of life of non-infected patients improved during one year. The effect of toxoplasmosis on quality of life was gender related, which could be explained by already...
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Influence of latent toxoplasmosis on intelligence of infected subjects
Chvátalová, Veronika ; Flegr, Jaroslav (advisor) ; Lindová, Jitka (referee)
There remain inconsistencies in the literature concerning the intelligence of subjects infected with latent toxoplasmosis. The main goals of this work are to find out whether, a) latent toxoplasmosis influences the intelligence of infected subjects and b) whether Rh negative and Rh positive subjects respond to the infection in different ways. In this work we used a complex test of intelligence, The Structure Intelligence Test I-S-T 2000 R. We were able to statistically control for the confounding variable the size of the place of residence in childhood. This had benefits when compared to previous studies. The differences in intelligence were measured in students of The Faculty of Science. The sample used included 46 toxoplasma-infected and 188 toxoplasma-free individuals. Using nonparametric tests we found lower numerical, fluid and general intelligence in toxoplasma-infected subjects compared to noninfected subjects. In addition, these tendencies were also observed in the results of parametric tests. Further to these components of intelligence there was also found to be a lower component of numerical knowledge in toxoplasma-infected males. By contrast, no differences between infected and noninfected individuals was found to occur in the female test subjects. No statistically significant...
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