A new study of math anxiety says it might be genetic.  Ohio researchers examined individual math anxiety in more than 500 sets of twins from kindergarten on. 

The study found genetic factors accounted for nearly half the differences in anxiety levels.  The study appears online in the "Journal of Child Psychology and Psychiatry."

   Also,  a new study says simple changes to homework help college students learn more effectively. 

Researchers at Rice and Duke Universities studied undergraduates in an engineering course. They found the techniques like follow-up problems and spacing assignments over three weeks helped students retain more information and improved exam scores. 

The study appears this week in the journal "Educational Psychology Review."