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No Evidence of Association between Toxoplasma gondii Infection and Financial Risk Taking in Females.

Lanchava L, Carlson K, Šebánková B, Flegr J, Nave G - PLoS ONE (2015)

Bottom Line: Past research linked Toxoplasma gondii (TG) infection in humans with neurological and mental disorders (e.g., schizophrenia, Alzheimer's disease and attention disorders), irregularities of the dopaminergic and testosterone system, and increased likelihood of being involved in traffic accidents.We estimate each subject's risk attitude and loss aversion using an experimental economic task involving real monetary incentives.We find no significant evidence that either measure of decision-making is associated with TG infection.

View Article: PubMed Central - PubMed

Affiliation: Center for Economic Research and Graduate Education and Economics Institute (CERGE-EI), Prague, Czech Republic.

ABSTRACT

Background: Past research linked Toxoplasma gondii (TG) infection in humans with neurological and mental disorders (e.g., schizophrenia, Alzheimer's disease and attention disorders), irregularities of the dopaminergic and testosterone system, and increased likelihood of being involved in traffic accidents.

Methodology/principal findings: We test for an association between TG infection and financial decision-making (DM) using a case-control design in a sample of female Czech students (n = 79). We estimate each subject's risk attitude and loss aversion using an experimental economic task involving real monetary incentives. We find no significant evidence that either measure of decision-making is associated with TG infection.

Conclusion: We were unable to find evidence of an association between TG infection and financial decision-making in females.

No MeSH data available.


Related in: MedlinePlus

Frequency of risky choices in Toxoplasma-infected and Toxoplasma-free subjects.The graph shows arithmetic means, standard errors and a p-value.
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pone.0136716.g002: Frequency of risky choices in Toxoplasma-infected and Toxoplasma-free subjects.The graph shows arithmetic means, standard errors and a p-value.

Mentions: For each subject, we calculated a raw measure of risk attitude by calculating the frequency of risky choices (i.e., the proportion of trials in which the subject chose the risky option). Fig 2 shows the means of this variable in both TG-infected and TG-free subjects. The difference was not statistically significant (t(77) = 0.61, P>0.53). To further assess risk-seeking behavior, we examined subjects’ choices when the expected value of the gamble was less than the sure option; a two tailed t-test shows that the difference was not statistically significant (t(77) = -0.40, P>0.68, Fig 3, left panel). We also found no significant differences in the frequency of risky choices when the expected value of the gamble was more than the sure option (t(77) = 1.33, P>0.18, Fig 3, right panel). Additionally, we compared average response times (RTs) in seconds (per trial) across the two groups (see Fig 4). In accordance with previous studies reporting slower RTs in TG-infected subjects [42] the TG-infected group average RT was larger than the TG-free counterparts, though the difference was not statistically significant (t(77) = -1.10, P>0.27). We also found no differences in RTs between the two groups when separately examining choices of the risky option (t(77) = -1.62, P>0.10, Fig 5, left panel) and choices of the sure option (t(77) = -1.33, P>0.18, Fig 5, right panel).


No Evidence of Association between Toxoplasma gondii Infection and Financial Risk Taking in Females.

Lanchava L, Carlson K, Šebánková B, Flegr J, Nave G - PLoS ONE (2015)

Frequency of risky choices in Toxoplasma-infected and Toxoplasma-free subjects.The graph shows arithmetic means, standard errors and a p-value.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4581702&req=5

pone.0136716.g002: Frequency of risky choices in Toxoplasma-infected and Toxoplasma-free subjects.The graph shows arithmetic means, standard errors and a p-value.
Mentions: For each subject, we calculated a raw measure of risk attitude by calculating the frequency of risky choices (i.e., the proportion of trials in which the subject chose the risky option). Fig 2 shows the means of this variable in both TG-infected and TG-free subjects. The difference was not statistically significant (t(77) = 0.61, P>0.53). To further assess risk-seeking behavior, we examined subjects’ choices when the expected value of the gamble was less than the sure option; a two tailed t-test shows that the difference was not statistically significant (t(77) = -0.40, P>0.68, Fig 3, left panel). We also found no significant differences in the frequency of risky choices when the expected value of the gamble was more than the sure option (t(77) = 1.33, P>0.18, Fig 3, right panel). Additionally, we compared average response times (RTs) in seconds (per trial) across the two groups (see Fig 4). In accordance with previous studies reporting slower RTs in TG-infected subjects [42] the TG-infected group average RT was larger than the TG-free counterparts, though the difference was not statistically significant (t(77) = -1.10, P>0.27). We also found no differences in RTs between the two groups when separately examining choices of the risky option (t(77) = -1.62, P>0.10, Fig 5, left panel) and choices of the sure option (t(77) = -1.33, P>0.18, Fig 5, right panel).

Bottom Line: Past research linked Toxoplasma gondii (TG) infection in humans with neurological and mental disorders (e.g., schizophrenia, Alzheimer's disease and attention disorders), irregularities of the dopaminergic and testosterone system, and increased likelihood of being involved in traffic accidents.We estimate each subject's risk attitude and loss aversion using an experimental economic task involving real monetary incentives.We find no significant evidence that either measure of decision-making is associated with TG infection.

View Article: PubMed Central - PubMed

Affiliation: Center for Economic Research and Graduate Education and Economics Institute (CERGE-EI), Prague, Czech Republic.

ABSTRACT

Background: Past research linked Toxoplasma gondii (TG) infection in humans with neurological and mental disorders (e.g., schizophrenia, Alzheimer's disease and attention disorders), irregularities of the dopaminergic and testosterone system, and increased likelihood of being involved in traffic accidents.

Methodology/principal findings: We test for an association between TG infection and financial decision-making (DM) using a case-control design in a sample of female Czech students (n = 79). We estimate each subject's risk attitude and loss aversion using an experimental economic task involving real monetary incentives. We find no significant evidence that either measure of decision-making is associated with TG infection.

Conclusion: We were unable to find evidence of an association between TG infection and financial decision-making in females.

No MeSH data available.


Related in: MedlinePlus