Contribution of implicit sequence learning to spoken language processing: some preliminary findings with hearing adults

Spoken language consists of a complex, sequentially arrayed signal that contains patterns that can be described in terms of statistical relations among language units. Previous research has suggested that a domain-general ability to learn structured sequential patterns may underlie language acquisition. To test this prediction, we examined the extent to which implicit sequence learning of probabilistically structured patterns in hearing adults is correlated with a spoken sentence perception task under degraded listening conditions. Performance on the sentence perception task was found to be correlated with implicit sequence learning, but only when the sequences were composed of stimuli that were easy to encode verbally. Implicit learning of phonological sequences thus appears to underlie spoken language processing and may indicate a hitherto unexplored cognitive factor that may account for the enormous variability in language outcomes in deaf children with cochlear implants. The present findings highlight the importance of investigating individual differences in specific cognitive abilities as a way to understand and explain language in deaf learners and, in particular, variability in language outcomes following cochlear implantation.     

Directed approach responses and positive conditioned suppression in the rat

Three experiments evaluated an alternative to accounts of positive conditioned suppression that stress central (i.e., motivational or emotional) states. This “competing-response” interpretation was tested by analyzing directed movements that develop in rats during a visual or an auditory stimulus (CS) that signals an appetitive reinforcer (US) in a situation where the subject is also emitting an instrumental response for food. In each experiment, positive conditioned suppression (i.e., a reduction in the rate of such instrumental responding during CS presentations) was accompanied by responses directed toward the CS source and/or the US-delivery site. In Experiment 1, a diffuse (auditory) CS signaled a US delivered at some specific place in the chamber and rats approached the US-delivery site during CS. In Experiments 2 and 3, the spatial proximity of a localized visual CS and US-delivery site determined whether CS-directed or US-directed behavior predominated during the CS. The results suggest that the topographies of conditioned responses on any positive conditioned suppression procedure depend upon the spatial arrangements of features that elicit and support these behaviors. They further suggest that the identification of these features and their spatial arrangements is necessary for the analysis of appetitive classical-instrumental interactions.     

Do Judgments of Learning Directly Enhance Learning of Educational Materials?

When people make judgments of learning (JOLs) after studying paired associates, the process they engage in to monitor their learning can directly enhance learning for some types of material (Soderstrom et al. 2015). The current experiments investigated whether JOLs directly enhance learning educationally relevant texts. Across 5 experiments (N?=?703), people read several sections of an educational textbook with or without JOLs embedded between each section. We manipulated whether JOLs queried one’s understanding of the text at the aggregate level (Experiment 1) or for specific concepts in the text (Experiment 2a, 2b, 3, and 4). We also manipulated whether JOLs were framed to afford covert retrieval practice by prompting judgments with either the target information present or absent (Experiment 3). In most cases, instructing students to make JOLs did not improve comprehension above and beyond just reading the text. However, when people were instructed to retrieve information prior to making JOLs (Experiment 4), large learning gains occurred. These results indicate that JOLs in their standard form are unlikely to produce educational benefits to text comprehension in part because learners do not spontaneously retrieve criterial information when making metacomprehension judgments.

     

Retrieval-Based Learning: A Perspective for Enhancing Meaningful Learning

Learning is often identified with the acquisition, encoding, or construction of new knowledge, while retrieval is often considered only a means of assessing knowledge, not a process that contributes to learning. Here, we make the case that retrieval is the key process for understanding and for promoting learning. We provide an overview of recent research showing that active retrieval enhances learning, and we highlight ways researchers have sought to extend research on active retrieval to meaningful learning—the learning of complex educational materials as assessed on measures of inference making and knowledge application. However, many students lack metacognitive awareness of the benefits of practicing active retrieval. We describe two approaches to addressing this problem: classroom quizzing and a computer-based learning program that guides students to practice retrieval. Retrieval processes must be considered in any analysis of learning, and incorporating retrieval into educational activities represents a powerful way to enhance learning.     

Effects of extended fixed-interval training on reversed scallops

Two groups of pigeons were used to determine if different amounts of fixed-interval training with an added clock resulted in different local response rates when the clock was reversed. One group of seven pigeons received 120 reinforcements on a fixed-interval 90-sec schedule, while the other group received 1200 reinforcements. Following training, the added clock was reversed in extinction. Reversed scallops were obtained for both of the groups. Only the group with extended training showed an increase in responding during the previously reinforced segment of the interval. This suggests the development of greater temporal control with extended training.