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Lead Exposure Linked to ADHD in Kids with Genetic Mutation
Exposure to miniscule amounts of lead may contribute to ADHD symptoms in children who have a particular gene mutation, according to new research published in Psychological Science, a journal of the Association for Psychological Science. “This research is valuable to the scientific community as it bridges genetic and environmental factors and helps to illustrate one possible route to ADHD. Further, it demonstrates the potential to ultimately prevent conditions like ADHD by understanding how genes and environmental exposures combine,” says lead researcher Joel Nigg, professor of psychiatry and behavioral neuroscience at the OHSU School of Medicine.
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New Research From Psychological Science
Read about the latest research published in Psychological Science: Opportunity Cost Neglect Attenuates the Effect of Choices on Preferences Adam Eric Greenberg and Stephen A. Spiller When someone makes a decision, the cost of not choosing the second-best alternative is called the opportunity cost. In some cases, such as in "whether-or-not" decisions (e.g., to go to a movie or not), opportunity costs may not be apparent, whereas in others, such as "which-one" decisions (e.g., whether to go to a movie or go to a play), they are made explicit.
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Protecting a Few Students from Negative Stereotypes Benefits Entire Classroom
Interventions targeted at individual students can improve the classroom environment and trigger a second wave of benefits for all classmates, new research shows. The findings, published in Psychological Science, a journal of the Association for Psychological Science, indicate that sharing a classroom with greater numbers of students who participate in a brief intervention can boost all students’ grades over and above the initial benefits of the intervention. “Our results suggest that the whole effect of an intervention is more than the sum of its individual effects,” explains psychological scientist Joseph Powers of Stanford University, lead author on the study.
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New Research From Clinical Psychological Science
Read about the latest research published in Clinical Psychological Science: The Effects of Attachment Priming on Depressed and Anxious Mood Katherine B. Carnelley, Lorna J. Otway, and Angela C. Rowe Attachment theory suggests that people internalize the quality of early interactions with their primary caregivers, forming an attachment orientation that influences their perception of social interactions throughout their lives. Attachment insecurity has been associated with depression and anxiety; however, the evidence for this link is correlational.
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Terrorism May Make Liberals Think More Like Conservatives
Liberals’ attitudes toward Muslims and immigrants became more like those of conservatives following the July 7, 2005 bombings in London, new research shows. Data from two nationally representative surveys of British citizens revealed that feelings of national loyalty increased and endorsement of equality decreased among political liberals following the terrorist attack. The findings are published in Psychological Science, a journal of the Association for Psychological Science. Terrorist attacks on major international capital cities such as Paris, Ankara, or London are rare and dramatic events that undoubtedly shape public and political opinion.
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Poverty Dampens Genetic Influence on IQ, in the US
An analysis of data gathered from 14 independent studies indicates that the influence of genes on intelligence varies according to people’s social class in the US, but not in Western Europe or Australia. The findings are published in Psychological Science, a journal of the Association for Psychological Science. Research suggests that genes and environment both play a critical role in shaping a person’s intelligence. A longstanding hypothesis in the field of behavioral genetics holds that our potential intelligence, as set by our genes, is more fully expressed in environments that are supportive and nurturing, but is suppressed in conditions of poverty and disadvantages.