The article presents the results of a study commissioned by Hewlett-Packard Co. and conducted at the University of London's Institute of Psychiatry. According to the study, excessive use of technology, such as email and text messages, can cause a fall in IQ greater than that caused by smoking marijuana. The research showed that the average reduction of 10 IQ points as participants' work was interrupted by emails and text messages is more than double the four-point loss caused by use of the drug.