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-MSNBC: Want
to improve your memory? Oh forget it! Though counterintuitive, forgetting is critical for the efficient and adaptive functioning of human memory. Without a means of suppressing or setting aside information that has become outdated or irrelevant, it would become increasingly difficult to remember new and relevant information. The focus of our research is to better understand the mechanisms and consequences of this adaptive form of forgetting. Dynamics and Consequences of Retrieval in
Memory
When
attempting to retrieve a target item from memory,
non-target items associated with the same retrieval cue
can become activated, creating competition, and
requiring that the items causing that competition be
selected against, or inhibited. This
inhibition may explain a rather unintuitive
observation—that retrieving some items from memory
causes the forgetting of other items in memory, a
phenomenon known as
retrieval-induced forgetting (Anderson, Bjork,
& Bjork, 1994). Although
inhibition may seem like a reasonable explanation of
retrieval-induced forgetting, others have argued that it
can be better explained by factors such as blocking or
associative interference. Our
research has strongly supported the inhibitory account
of retrieval-induced forgetting and helped elucidate the
nature of the processes that underlie this forgetting
(e.g., Little, Storm, & Bjork, 2011; Storm &
Angello, 2010; Storm, Bjork, & Bjork, 2005; 2007;
2008; under review; Storm, Bjork, Bjork, & Nestojko,
2006; Storm & Jobe, in press; Storm & Nestojko,
2010; Storm & White, 2010; Yamada, Tsukimoto,
Schilling, Storm, & Kawaguchi, under review; for
reviews see Storm, 2011a; 2011b; Storm & Levy, under
review). Indiividuals who are the most creative
are often the least capable of controling their thoughts
and actions. Yet, there may be conditions in which
inhibition has the power to enhance creative
cognition. Many creative tasks are difficult
because old and inappropriate ideas cause mental fixation
(see Smith, 2003), thus preventing the generation of new
and appropriate ideas. Our research suggests that
inhibition can facilitate creative thinking and problem
solving by providing a means by which to overcome this
fixation (Koppel & Storm, under review; Storm &
Angello, 2010). Interestingly, we have also found
that attempting to solve a problem can cause the
forgetting of irrelevant and inappropriate information,
a phenomenon we refer to as problem-solving-induced
forgetting (Storm, Angello, & Bjork, 2011; Storm
& Koppel, under review; for a review see Storm,
2011b). Forgetting
Emotional/Traumatic Information William
James argued that forgetting can be as important a
function as recollecting, and such is certainly the case
in regard to painful autobiographical memories. We
often experience events that we would prefer to never
remember or think about again, and inhibition may
underlie our ability to do so. Our interests
include the suppression and recovery of
emotional/traumatic autobiographical memories, the
processes by which such memories are shaped and
distorted over time, and the consequences of this
forgetting on our well-being and the perception of
others (e.g., Storm & Jobe, under review; Storm,
Bjork, & Bjork, 2005). Memory,
Metamemory, and Learning There is great potential to apply the principles of cognitive psychology to enhance learning. In educational contexts, students and teachers tend to create conditions of learning that facilitate effortless acquisition and high levels of immediate performance. After a delay, however, these conditions are clearly not as effective as they appear to be (Bjork, 1994, 1999). The crux of the problem seems to lie in people’s view of forgetting as the undoing of learning, rather than as a critical component of learning. In fact, research has shown that manipulations that induce forgetting between learning opportunities often lead to better long-term retention than manipulations that prevent forgetting. In this line of research we are exploring the mechanisms by which forgetting and difficulty serve as enablers of future learning. Issues under investigation include spacing, generation, testing, test scheduling, highlighting, and various metamemory considerations related to learning (Bjork & Storm; 2011; Bjork, Storm, & DeWinstanley, 2011; Little, Storm, & Bjork, 2011; Storm, Bjork, & Castel, in prep; Storm, Bjork, & Kornell, in prep; Storm, Bjork, & Storm, 2010; Bjork, DeWinstanley, & Storm, 2007; Storm, Bjork, & Friedman, in prep).
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