Posted 04.17.2018 | by AMRA
Previous learning sometimes interferes with our ability to learn new things. For example, when we memorize one poem and then another, we may mistakenly include words from the first poem when reciting the second. This problem is called proactive interference (PI). People may be able to reduce PI by focusing on the present while screening out competing thoughts and memories—in other words, by mindfulness.
Previous research suggests that reduced PI depends on activation of a brain structure known as the hippocampus. The hippocampus plays an important role in learning and memory, and helps us distinguish old learning from new. Prior research shows that mindfulness training can increase the size of the hippocampus. Greenberg et al. [Brain Imaging and Behavior] investigated whether mindfulness training reduces PI, and whether that reduction is associated with increases in hippocampal size.
The researchers randomly assigned 79 participants (70% female; average age = 27 years; 65% Caucasian) to a 4-week mindfulness-training program or a 4-week creative writing program. Of those, 67 participants were scanned using magnetic resonance imaging (MRI) before and after training to assess hippocampal volume.
Both the mindfulness and creative writing programs were offered in four 1-hour group sessions using a web-based technology that enabled participants to see and communicate with instructors and fellow participants. The mindfulness program offered training in focused-attention and open monitoring meditation. Participants were asked to practice learned mindfulness skills on their own for 30 minutes five times a week. The creative writing participants wrote short essays in response to photos or texts, and were asked to write on their own for 30 minutes five times a week.
PI was assessed before and after training by […]