Memory and comprehension for health information among older adults: distinguishing the effects of domain-general and domain-specific knowledge

While there is evidence that knowledge influences understanding of health information, less is known about the processing mechanisms underlying this effect and its impact on memory. We used the moving window paradigm to examine how older adults varying in domain-general crystallised ability (verbal ability) and health knowledge allocate attention to understand health and domain-general texts. Participants (n = 107, age: 60-88 years) read and recalled single sentences about hypertension and about non-health topics. Mixed-effects modelling of word-by-word reading times suggested that domain-general crystallised ability increased conceptual integration regardless of text domain, while health knowledge selectively increased resource allocation to conceptual integration at clause boundaries in health texts. These patterns of attentional allocation were related to subsequent recall performance. Although older adults with lower levels of crystallised ability were less likely to engage in integrative processing, when they did, this strategy had a compensatory effect in improving recall. These findings suggest that semantic integration during reading is an important comprehension process that supports the construction of the memory representation and is engendered by knowledge. Implications of the findings for theories of text processing and memory as well as for designing patient education materials are discussed

The Effects of Home-Based Cognitive Training on Verbal Working Memory and Language Comprehension in Older Adulthood

Effective language understanding is crucial to maintaining cognitive abilities and learning new information through adulthood. However, age-related declines in working memory (WM) have a robust negative influence on multiple aspects of language comprehension and use, potentially limiting communicative competence. In the current study (N = 41), we examined the effects of a novel home-based computerized cognitive training program targeting verbal WM on changes in verbal WM and language comprehension in healthy older adults relative to an active component-control group. Participants in the WM training group showed non-linear improvements in performance on trained verbal WM tasks. Relative to the active control group, WM training participants also showed improvements on untrained verbal WM tasks and selective improvements across untrained dimensions of language, including sentence memory, verbal fluency, and comprehension of syntactically ambiguous sentences. Though the current study is preliminary in nature, it does provide initial promising evidence that WM training may influence components of language comprehension in adulthood and suggests that home-based training of WM may be a viable option for probing the scope and limits of cognitive plasticity in older adults

What Makes You Feel You Are Learning: Cues to Self-Regulated Learning

While learning in a multitext environment increases with therise of electronic environments, little is known about whatmakes learners feel that they should continue learning oralready learn enough from one text. The current study aimedat examining what cues learners use to regulate their effortamong multiple sources in a multitext environment. Bymanipulating the amount of new information and conceptualoverlap across texts within a topic, we created three types oftext environments to generate different trajectories of twocues to perceived learning, new information (measured byrating of perceived new information) and encoding fluency(measured by ratings of reading ease). Results showed thatthe dominant cue to gauge perceived learning was theperceived amount of new information. The study extendedtheories in animal foraging and metacognition, andestablished a novel paradigm to better investigate adultlearning in the wild

Expertise, Cognitive Ability, and Age Effects on Pilot Communication

We investigated whether expertise reduced age-related declines in pilot communication, using multiple expertise measures and laboratory tasks varying in domain rel-evance. Younger, middle-aged, and older pilots and nonpilots listened to air traffic control messages that described an aircraft's route through an airspace, while they referred to a chart of that airspace. They read back each message, then answered a probe question about the aircraft's route. Pilots read back messages more accurately than did nonpilots, and younger participants were more accurate than older participants. Expertise and aging had similar effects on the probe task, suggesting that these groups were better able to interpret the air traffic control messages in relation to the chart, in order to create a situation model of the flight. Expertise did not moderate age-related declines on the aviation tasks studied here. There was, however