Jeffrey D. Wammes

On the relation between motivation and retention in educational contexts: The role of intentional and unintentional mind wandering

Highly motivated students often exhibit better academic performance than less motivated students. However, to date, the specific cognitive mechanisms through which motivation increases academic achievement are not well understood. Here we explored the possibility that mind wandering mediates the relation between motivation and academic performance, and additionally, we examined possible mediation by both intentional and unintentional forms of mind wandering. We found that participants reporting higher motivation to learn in a lecture-based setting tended to engage in less mind wandering, and that this decrease in mind wandering was in turn associated with greater retention of the lecture material. Critically, we also found that the influence of motivation on retention was mediated by both intentional and unintentional types of mind wandering. Not only do the present results advance our theoretical understanding of the mechanisms underlying the relation between motivation and academic achievement, they also provide insights into possible methods of intervention that may be useful in improving student retention in educational settings.

The drawing effect: Evidence for reliable and robust memory benefits in free recall

In 7 free-recall experiments, the benefit of creating drawings of to-be-remembered information relative to writing was examined as a mnemonic strategy. In Experiments 1 and 2, participants were presented with a list of words and were asked to either draw or write out each. Drawn words were better recalled than written. Experiments 3–5 showed that the memory boost provided by drawing could not be explained by elaborative encoding (deep level of processing, LoP), visual imagery, or picture superiority, respectively. In Experiment 6, we explored potential limitations of the drawing effect, by reducing encoding time and increasing list length. Drawing, relative to writing, still benefited memory despite these constraints. In Experiment 7, the drawing effect was significant even when encoding trial types were compared in pure lists between participants, inconsistent with a distinctiveness account. Together these experiments indicate that drawing enhances memory relative to writing, across settings, instructions, and alternate encoding strategies, both within- and between-participants, and that a deep LoP, visual imagery, or picture superiority, alone or collectively, are not sufficient to explain the observed effect. We propose that drawing improves memory by encouraging a seamless integration of semantic, visual, and motor aspects of a memory trace.

Representation of Linguistic Information Determines Its Susceptibility to Memory Interference

We used the dual-task paradigm to infer how linguistic information is represented in the brain by indexing its susceptibility to retrieval interference. We measured recognition memory, in bilingual Chinese-English, and monolingual English speakers. Participants were visually presented with simplified Chinese characters under full attention, and later asked to recognize them while simultaneously engaging in distracting tasks that required either phonological or visuo-spatial processing of auditorily presented letters. Chinese speakers showed significantly greater memory interference from the visuo-spatial than phonological distracting task, a pattern that was not present in the English group. Such a pattern suggests that retrieval of simplified Chinese characters differentially requires visuo-spatial processing resources in Chinese speakers; these are compromised under dual-task conditions when such resources are otherwise engaged in a distracting task. In a secondary analysis, we showed the complementary pattern in a group of English speakers, whose memory for English words was disrupted to a greater degree from the phonological than visuo-spatial distracting task. Together, these results suggest the mode of representation of linguistic information can be indexed behaviorally by susceptibility to retrieval interference that occurs when representations overlap with resources required in a competing task.

Creating a Recollection-Based Memory through Drawing.

Drawing a picture of to-be-remembered information substantially boosts memory performance in free-recall tasks. In the current work, we sought to test the notion that drawing confers its benefit to memory performance by creating a detailed recollection of the encoding context. In Experiments 1 and 2, we demonstrated that for both pictures and words, items that were drawn by the participant at encoding were better recognized in a later test than were words that were written out. Moreover, participants’ source memory (in this experiment, correct identification of whether the word was drawn or written) was superior for items drawn relative to written at encoding. In Experiments 3A and 3B, we used a remember-know paradigm to demonstrate again that drawn words were better recognized than written words, and further showed that this effect was driven by a greater proportion of recollection-, rather than familiarity-based responses. Lastly, in Experiment 4 we implemented a response deadline procedure, and showed that when recognition responses were speeded, thereby reducing participants’ capacity for recollection, the benefit of drawing was substantially smaller. Taken together, our findings converge on the idea that drawing improves memory as a result of providing vivid contextual information which can be later called upon to aid retrieval.

Autobiographical and episodic memory deficits in mild traumatic brain injury

HighlightsRemote mild traumatic brain injury (mTBI) results in distinct cognitive signature.Young mTBI, and older adults show impaired episodic but preserved semantic memory.In recounting their autobiographical memory, young mTBI recall less episodic detail.Our battery of cognitive tasks predicted mTBI status in young with 79.5% accuracy.Results indicate lingering memory deficits years after suffering mTBI. Abstract Those who have suffered a concussion, otherwise known as a mild traumatic brain injury (mTBI), often complain of lingering memory problems. However, there is little evidence in the behavioral literature reliably demonstrating memory deficits. Thus, in the present study, cognitive profiles including measures of general executive functioning and processing speed, as well as episodic and semantic memory were collected in younger and older adult participants with or without a remote (>1 year prior to testing) mTBI. We first investigated whether there were observable episodic and autobiographical memory impairments associated with mTBI within an otherwise healthy young group. Next, because previous work had demonstrated some overlap in patterns of behavioral impairment in normally aging adults and younger adults with a history of mTBI (e.g. Ozen, Fernandes, Clark, & Roy, 2015), we sought to determine whether these groups displayed similar cognitive profiles. Lastly, we conducted an exploratory analysis to test whether having suffered an mTBI might exacerbate age‐related cognitive decline. Results showed the expected age‐related decline in episodic memory performance, coupled with a relative preservation of semantic memory in older adults. Importantly, this pattern was also present in younger adults with a history of remote mTBI. No differences were observed across older adult groups based on mTBI status. Logistic regression analyses, using each measure in our battery as a predictor, successfully classified mTBI status in younger participants with a high degree of specificity (79.5%). These results indicate that those who have had an mTBI demonstrate a distinct cognitive signature, characterized by impairment in episodic and autobiographical memory, coupled with a relative preservation of semantic memory.

Interfering with memory for faces: The cost of doing two things at once

We inferred the processes critical for episodic retrieval of faces by measuring susceptibility to memory interference from different distracting tasks. Experiment 1 examined recognition of studied faces under full attention (FA) or each of two divided attention (DA) conditions requiring concurrent decisions to auditorily presented letters. Memory was disrupted in both DA relative to FA conditions, a result contrary to a material-specific account of interference effects. Experiment 2 investigated whether the magnitude of interference depended on competition between concurrent tasks for common processing resources. Studied faces were presented either upright (configurally processed) or inverted (featurally processed). Recognition was completed under FA, or DA with one of two face-based distracting tasks requiring either featural or configural processing. We found an interaction: memory for upright faces was lower under DA when the distracting task required configural than featural processing, while the reverse was true for memory of inverted faces. Across experiments, the magnitude of memory interference was similar (a 19% or 20% decline from FA) regardless of whether the materials in the distracting task overlapped with the to-be-remembered information. Importantly, interference was significantly larger (42%) when the processing demands of the distracting and target retrieval task overlapped, suggesting a processing-specific account of memory interference.

On the Clock: Evidence for the Rapid and Strategic Modulation of Mind Wandering:

We examined the hypothesis that people can modulate their mind wandering on the basis of their expectations of upcoming challenges in a task. To this end, we developed a novel paradigm in which participants were presented with an analog clock, via a computer monitor, and asked to push a button every time the clock’s hand was pointed at 12:00. Importantly, the time at which the clock’s hand was pointed at 12:00 was completely predictable and occurred at 20-s intervals. During some of the 20-s intervals, we presented thought probes to index participants’ rates of mind wandering. Results indicated that participants decreased their levels of mind wandering as they approached the predictable upcoming target. Critically, these results suggest that people can and do modulate their mind wandering in anticipation of changes in task demands.

Interfering with free recall of words: Detrimental effects of phonological competition

We examined the effect of different distracting tasks, performed concurrently during memory retrieval, on recall of a list of words. By manipulating the type of material and processing (semantic, orthographic, and phonological) required in the distracting task, and comparing the magnitude of memory interference produced, we aimed to infer the kind of representation upon which retrieval of words depends. In Experiment 1, identifying odd digits concurrently during free recall disrupted memory, relative to a full attention condition, when the numbers were presented orthographically (e.g. nineteen), but not numerically (e.g. 19). In Experiment 2, a distracting task that required phonological-based decisions to either word or picture material produced large, but equivalent effects on recall of words. In Experiment 3, phonological-based decisions to pictures in a distracting task disrupted recall more than when the same pictures required semantically-based size estimations. In Experiment 4, a distracting task that required syllable decisions to line drawings interfered significantly with recall, while an equally difficult semantically-based color-decision task about the same line drawings, did not. Together, these experiments demonstrate that the degree of memory interference experienced during recall of words depends primarily on whether the distracting task competes for phonological representations or processes, and less on competition for semantic or orthographic or material-specific representations or processes.

The Surprisingly Powerful Influence of Drawing on Memory

The colloquialism “a picture is worth a thousand words” has reverberated through the decades, yet there is very little basic cognitive research assessing the merit of drawing as a mnemonic strategy. In our recent research, we explored whether drawing to-be-learned information enhanced memory and found it to be a reliable, replicable means of boosting performance. Specifically, we have shown this technique can be applied to enhance learning of individual words and pictures as well as textbook definitions. In delineating the mechanism of action, we have shown that gains are greater from drawing than other known mnemonic techniques, such as semantic elaboration, visualization, writing, and even tracing to-be-remembered information. We propose that drawing improves memory by promoting the integration of elaborative, pictorial, and motor codes, facilitating creation of a context-rich representation. Importantly, the simplicity of this strategy means it can be used by people with cognitive impairments to enhance memory, with preliminary findings suggesting measurable gains in performance in both normally aging individuals and patients with dementia.

Wandering Minds and Wavering Goals: Examining the Relation between Mind Wandering and Grit in Everyday Life and the Classroom

Here we examined the relation between mind wandering and the personality trait of ‘grit.’ Our hypothesis was that because mind wandering leads to a disruption of momentary goal completion, the tendency to mind wander might be inversely related to the completion of long-term goals that require sustained interest and effort (i.e., grittiness). In Study 1 we used online questionnaires and found that in everyday life, the propensity to mind wander was negatively correlated with individuals’ self-reported grittiness. Interestingly, the relation between mind wandering and grit was strongest for unintentional bouts of mind wandering (as compared with intentional mind wandering). We extended these findings in Study 2 by (a) using a more heterogeneous sample of participants, (b) including a measure of conscientiousness, and (c) including another measure of general perseverance. In addition to replicating our findings from Study 1, in Study 2 we found that the grit measure uniquely predicted spontaneous mind wandering over and above a measure of conscientiousness and an alternative measure of general perseverance. Lastly, in Study 3 we extend the relation between mind wandering and grit to the classroom, finding that mind wandering during university lectures was also related to self-reported grittiness. Taken together, we suggest that the propensity to experience brief lapses of attention is associated with the propensity to stick-with and complete long-term goals. We also provide evidence that when predicting mind wandering and inattention, measures of grit are not redundant with existing measure of conscientiousness and general perseverance. Nous avons par les présentes examiné la relation entre le vagabondage de l’esprit et le trait de personnalité qui consiste à avoir du cran. Notre hypothèse était que puisque le vagabondage de l’esprit entraîne la perturbation momentanée de l’achèvement d’un objectif, la tendance de l’esprit au vagabondage pourrait être inversement liée à l’achèvement de buts à long-terme nécessitant un effort et un intérêt soutenus (c.-à-d. le niveau de cran). Dans l’étude 1, au moyen de questionnaires en ligne, nous avons découvert que dans la vie de tous les jours, la propension au vagabondage de l’esprit était négativement corrélée avec le niveau de cran auto-déclaré par les individus. Fait intéressant, la relation entre le vagabondage de l’esprit et le niveau de cran était à son plus fort lors d’épisodes involontaires de vagabondage de l’esprit (en comparaison avec le vagabondage de l’esprit volontaire). Nous avons appliqué ces observations à l’étude 2 en (a) utilisant un échantillon de participants plus hétérogène, (b) incluant une mesure de conscienciosité et (c) incluant une autre mesure de persévérance générale. En plus de reproduire nos observations de l’étude 1, nous avons découvert grâce à l’étude 2, que la mesure du niveau de cran permettait seulement de prédire le vagabondage de l’esprit spontané au-delà d’une mesure de la conscienciosité et d’une mesure alternative de persévérance générale. Finalement, dans l’étude 3, nous étendons la relation entre le vagabondage de l’esprit et le niveau de cran à la salle de classe, pour enfin constater que le vagabondage de l’esprit pendant les cours universitaires était également lié au niveau de cran auto-déclaré. À la lumière de ces résultats combinés, nous suggérons que la propension à expérimenter de courts laps d’attention est associée à la propension à respecter et à réaliser les objectifs à long-terme. Nous fournissons aussi des preuves à l’effet que les prévisions de vagabondage de l’esprit et d’inattention ne sont pas redondantes avec les mesures existantes de conscienciosité et de persévérance générale.