London, July 4 (IANS) Over a third of British parents fear internet can have bad influence on their children, a study has found.

 
 One in three believes the web can "rewire" young brains and 80 percent worry that sites such as Facebook and Twitter are addictive, the Daily Express reported. 
 
 However, the study's author and neuroscience and education expert Paul Howard Jones insists internet is a valuable learning resource and that, in any case, all forms of learning caused changes within the brain.
 
 He says social networking sites are beneficial and help forge friendships, while computer games aid visual and motor response skills.
 
 The study was commissioned by the Nominet Trust, which promotes internet projects that address social disadvantage.