Do you often take pictures during your trips? Years ago, Linda Henkel, an American     16    , was travelling at the Great Canyon. "When I was at the canyon's edge, someone came to the front, took a picture and walked away," she recalls as she shares her     17     experience. "He didn't even look at the     18     views there! It's just like. 'Got it -- Done!'

Henkel is surprised by how much people depend on pictures for their     19    . These days people take pictures before dinner, during friend's birthday parties, and so on. They believe taking picture will help them remember the moment. However, according to Henkel's research, the opposite is true.

In her study, Henkel led a group of college students around a museum. She asked them to look 15 exhibits     20     and then to photograph 15 others. The next day, she tested the student's memory of the tour. She found that the students remembered fewer details about the exhibits they had photographed.

Henkel explains that when people rely on their cameras, they     21     pay attention to the every themselves. As a result, they often fail to remember their experiences well.

So taking pictures may     22     our brain from remembering things and places. But should looking over the pictures wake up our memories? Henkel says this is true. However, it happens only we spend enough time doing it.

"In order to remember, we have to     23     the photo carefully." Henkel says. Unfortunan most people never take the time to look over their digital pictures. Why? There are just too many them!