Scott H. Fraundorf

Executive attention and self-regulation in infancy

This study investigates early executive attention in infancy by studying the relations between infant sequential looking and other behaviors predictive of later self-regulation. One early marker of executive attention development is anticipatory looking, the act of looking to the location of a target prior to its appearance in that location, a process that involves endogenous control of visual orienting. Previous studies have shown that anticipatory looking is positively related to executive attention as assessed by the ability to resolve spatial conflict in 3-4-year-old children. In the current study, anticipatory looking was positively related to cautious behavioral approach in response to non-threatening novel objects in 6- and 7-month-old infants. This finding and previous findings showing the presence of error detection in infancy are consistent with the hypothesis that there is some degree of executive attention in the first year of life. Anticipatory looking was also related to the frequency of distress, to looking away from disturbing stimuli, and to some self-regulatory behaviors. These results may indicate either early attentional regulation of emotion or close relations between early developing fear and later self-regulation. Overall, the results suggest the presence of rudimentary systems of executive attention in infants and support further studies using anticipatory looking as a measure of individual differences in attention in infancy.

The effects of age on the strategic use of pitch accents in memory for discourse: A processing-resource account

In two experiments, we investigated age-related changes in how prosodic pitch accents affect memory. Participants listened to recorded discourses that contained two contrasts between pairs of items (e.g., one story contrasted British scientists with French scientists and Malaysia with Indonesia). The end of each discourse referred to one item from each pair; these references received a pitch accent that either denoted contrast (L + H* in the ToBI system) or did not (H*). A contrastive accent on a particular pair improved later recognition memory equally for young and older adults. However, older adults showed decreased memory if the other pair received a contrastive accent (Experiment 1). Young adults with low working memory performance also showed this penalty (Experiment 2). These results suggest that pitch accents guide processing resources to important information for both older and younger adults but diminish memory for less important information in groups with reduced resources, including older adults.

The influences of valence and arousal on judgments of learning and on recall

Much is known about how the emotional content of words affects memory for those words, but only recently have researchers begun to investigate whether emotional content influences metamemory—that is, learners’ assessments of what is or is not memorable. The present study replicated recent work demonstrating that judgments of learning (JOLs) do indeed reflect the superior memorability of words with emotional content. We further contrasted two hypotheses regarding this effect: a physiological account in which emotional words are judged to be more memorable because of their arousing properties, versus a cognitive account in which emotional words are judged to be more memorable because of their cognitive distinctiveness. Two results supported the latter account. First, both normed arousal (Exp. 1) and normed valence (Exp. 2) independently influenced JOLs, even though only an effect of arousal would be expected under a physiological account. Second, emotional content no longer influenced JOLs in a design (Exp. 3) that reduced the primary distinctiveness of emotional words by using a single list of words in which normed valence and arousal were varied continuously. These results suggest that the metamnemonic benefit of emotional words likely stems from cognitive factors.

Reduction in Prosodic Prominence Predicts Speakers' Recall: Implications for Theories of Prosody.

Repeated words are often reduced in prosodic prominence, but the underlying mechanisms remain unclear. The present study contrasted two theories: does prosodic reduction reflect the choice of a particular linguistic form, or does ease of retrieval within the language production system lead to facilitated, less prominent productions? One test of facilitation-based theories is suggested by findings on human memory: whether a second presentation of an item benefits later memory is predicted by the items availability at the time of the second presentation. If prosodic reduction partially reflects facilitated retrieval, it should predict later memory. One naive participant described to another participant routes on a map. Critical items were mentioned twice. Following the map task, the speaker attempted written recall of the mentioned items. As expected, acoustic intensity of the second mentions predicted later recall in the same way that difficulty of retrieval has in other tasks. This pattern suggests that one source of prosodic reduction is facilitation within the language production system.

Effects of contrastive accents in memory for L2 discourse

Contrastive pitch accents benefit native English speakers’ memory for discourse by enhancing a representation of a specific relevant contrast item (Fraundorf et al., 2010). This study examines whether and how second language (L2) listeners differ in how contrastive accents affect their encoding and representation of a discourse, as compared to native speakers. Using the same materials as Fraundorf et al. (2010), we found that low and mid proficiency L2 learners showed no memory benefit from contrastive accents. High proficiency L2 learners revealed some sensitivity to contrastive accents, but failed to fully integrate information conveyed by contrastive accents into their discourse representation. The results suggest that L2 listeners’ non-native performance in processing contrastive accents, observed in this and other prior studies, may be attributed at least in part to a difference in the depth of processing of the information conveyed by contrastive accents.

Individual differences in syntactic processing: Is there evidence for reader-text interactions?

There remains little consensus about whether there exist meaningful individual differences in syntactic processing and, if so, what explains them. We argue that this partially reflects the fact that few psycholinguistic studies of individual differences include multiple constructs, multiple measures per construct, or tests for reliable measures. Here, we replicated three major syntactic phenomena in the psycholinguistic literature: use of verb distributional statistics, difficulty of object-versus subject-extracted relative clauses, and resolution of relative clause attachment ambiguities. We examine whether any individual differences in these phenomena could be predicted by language experience or general cognitive abilities (phonological ability, verbal working memory capacity, inhibitory control, perceptual speed). We find correlations between individual differences and offline, but not online, syntactic phenomena. Condition effects on reading time were not consistent within individuals, limiting their ability to correlate with other measures. We suggest that this might explain controversy over individual differences in language processing.

An Evaluation of the Effectiveness of Just-In-Time Hints

The present study evaluates the effectiveness of Just-In-Time Hints (JITs) by testing two competing hypotheses about learning from errors. The tutor-remediation hypothesis predicts that students learn best when a tutoring system immediately explains why an entry is incorrect. The self-remediation hypothesis predicts that learning is maximized when learners attempt to correct their own errors. The Cognitive Tutor was used to test these hypotheses because it offers both JITs, which map onto the tutor-remediation hypothesis, and flag feedback, which maps onto the self-remediation hypothesis. To evaluate the effectiveness of JITs, we conducted a naturalistic experiment where learning from older versions of the software, which did not include specific JITs, was contrasted with a later version that included the JITs. The results suggest JITs reduced the frequency of errors; however, this observation was qualified by an aptitude-treatment interaction whereby high- and low-prior knowledge students differentially benefited from JIT availability.