Word: groupsings
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Past research has also shown that peer exposure can worsen behavior. In a 1995 study conducted by Dishion involving 158 high-risk families in Oregon, researchers compared the impact on teens' behavior of four interventions: parenting groups focused on effective discipline, social-skills-training groups for teens, both the parent...
The new study supports these findings, suggesting that family therapy or one-on-one counseling - or any intervention that doesn't aggregate troubled teens - is safer and more likely to be effective than group activities. But if groups must be used, experts say that high supervision and low child-to...
But it turns out that even during the relatively peaceful eras between global calamities, during what is known as background extinction, whole families of species can disappear, pushed out of existence together. And it's not random. According to a new study published in the August 7 issue of Science...
Roy and his colleagues at the Smithsonian Institution and the University of Chicago examined 200 million years of history of marine clams, oysters and mussels; they picked the simple bivalves because they have a long and detailed fossil record. Going back to the Jurassic period, researchers analyzed when each genus...
This matters because if extinction were truly random, we'd have a much richer evolutionary history, because at least some representatives of all living things would make it to the present. But because extinction tends to be clumped around certain lineages, when extinction occurs we lose whole groups of species...