scholarly journals The Effect of Stimulus Valence on Lexical Retrieval in Younger and Older Adults

2017 ◽  
Vol 60 (7) ◽  
pp. 2081-2089 ◽  
Author(s):  
Deena Schwen Blackett ◽  
Stacy M. Harnish ◽  
Jennifer P. Lundine ◽  
Alexandra Zezinka ◽  
Eric W. Healy
Keyword(s):  
Older Adults ◽  
Reaction Times ◽  
Naming Latency ◽  
Emotional Valence ◽  
Lexical Retrieval ◽  
Emotional Stimuli ◽  
Younger Adults ◽  
Attentional Resources ◽  
Negative Images ◽  
Naming Latencies

Purpose Although there is evidence that emotional valence of stimuli impacts lexical processes, there is limited work investigating its specific impact on lexical retrieval. The current study aimed to determine the degree to which emotional valence of pictured stimuli impacts naming latencies in healthy younger and older adults. Method Eighteen healthy younger adults and 18 healthy older adults named positive, negative, and neutral images, and reaction time was measured. Results Reaction times for positive and negative images were significantly longer than reaction times for neutral images. Reaction times for positive and negative images were not significantly different. Whereas older adults demonstrated significantly longer naming latencies overall than younger adults, the discrepancy in latency with age was far greater when naming emotional pictures. Conclusions Emotional arousal of pictures appears to impact naming latency in younger and older adults. We hypothesize that the increase in naming latency for emotional stimuli is the result of a necessary disengagement of attentional resources from the emotional images prior to completion of the naming task. We propose that this process may affect older adults disproportionately due to a decline in attentional resources as part of normal aging, combined with a greater attentional preference for emotional stimuli.

scholarly journals Reliance on central vs. peripheral vision for visual search in younger and older adults

2020 ◽  
Author(s):  
Anne-Sophie Laurin ◽  
Julie Ouerfelli-Éthier ◽  
Laure Pisella ◽  
Aarlenne Zein Khan
Keyword(s):  
Older Adults ◽  
Visual Search ◽  
Peripheral Vision ◽  
Reaction Times ◽  
Central Vision ◽  
Younger Adults ◽  
Serial Search ◽  
Attentional Resources ◽  
Search Tasks ◽  
Fixation Durations

Older adults show declines performing visual search, but their nature is unclear. We propose that it is related to greater attentional reliance on central vision. To investigate this, we tested how occluding central vision would affect younger and older adults in visual search. Participants (14 younger, M = 21.6 years; 16 older, M = 69.6 years) performed pop-out and serial search tasks in full view and with different sized gaze-contingent artificial central scotomas (no scotoma, 3°, 5° or 7° diameter).In pop-out search, older adults showed longer search times for peripheral targets during full viewing. Their reaction times, saccades and fixation durations also increased as a function of scotoma size, contrary to younger adults. These declines may reflect a relative impairment in peripheral visual attention for global processing in aging.In serial search, despite older adults being generally slower, we found no difference between groups in reaction time increases for eccentric targets and for bigger scotomas. These results may come from the difficulty of serial search, in which both groups used centrally limited attentional windows.We conclude that older adults allocate more attentional resources towards central vision compared to younger adults, impairing their peripheral processing primarily in pop-out visual search.

scholarly journals Adult age differences in subjective responses to dynamic socioemotional incentives

2020 ◽  
Author(s):  
Sade J Abiodun ◽  
Galen McAllister ◽  
Gregory Russell Samanez-Larkin ◽  
Kendra Leigh Seaman
Keyword(s):  
Older Adults ◽  
Age Differences ◽  
Emotional Valence ◽  
Incentive Motivation ◽  
Social Signals ◽  
Younger Adults ◽  
Positivity Effect ◽  
Adult Age ◽  
Age Related ◽  
Adult Age Differences

Facial expressions are powerful communicative social signals that motivate feelings and action in the observer. However, research on incentive motivation has overwhelmingly focused on money and points and the limited research on social incentives has been mostly focused on responses in young adulthood. Previous research on the age-related positivity effect and adult age differences in social motivation suggest that older adults might experience higher levels of positive arousal to socioemotional stimuli than younger adults. Affect ratings following dynamic emotional expressions (anger, happiness, sadness) varying in magnitude of expression showed that higher magnitude expressions elicited higher arousal and valence ratings. Older adults did not differ significantly in levels of arousal when compared to younger adults, however their ratings of emotional valence were significantly higher as the magnitude of expressions increased. The findings provide novel evidence that socioemotional incentives may be relatively more reinforcing as adults age. More generally, these dynamic socioemotional stimuli that vary in magnitude are ideal for future studies of more naturalistic affect elicitation, studies of social incentive processing, and use in incentive-driven choice tasks.

scholarly journals Effects of age on inhibitory control are affected by task-specific features

2018 ◽  
Vol 71 (5) ◽  
pp. 1219-1233 ◽  
Author(s):  
Angela de Bruin ◽  
Sergio Della Sala
Keyword(s):  
Older Adults ◽  
Inhibitory Control ◽  
Processing Speed ◽  
Simon Task ◽  
Flanker Task ◽  
Reaction Times ◽  
Age Effects ◽  
Control Task ◽  
Younger Adults

Older adults have been argued to have impoverished inhibitory control compared to younger adults. However, these effects of age may depend on processing speed and their manifestation may furthermore depend on the type of inhibitory control task that is used. We present two experiments that examine age effects on inhibition across three tasks: a Simon arrow, static flanker and motion flanker task. The results showed overall slower reaction times (RTs) for older adults on all three tasks. However, effects of age on inhibition costs were only found for the Simon task, but not for the two flanker tasks. The motion flanker task furthermore showed an effect of baseline processing speed on the relation between age and inhibition costs. Older adults with slower baseline responses showed smaller inhibition costs, suggesting they were affected less by the flanker items than faster older adults. These findings suggest that effects of age on inhibition are task dependent and can be modulated by task-specific features such as the type of interference, type of stimuli and processing speed.

scholarly journals Generativity in Life Review: Discovering Life Lessons and Wisdom in Naturalistic Intergenerational Conversations

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 978-979
Author(s):  
Patricia Chilton ◽  
Cindy Woolverton ◽  
Elizabeth Glisky ◽  
Matthias Mehl ◽  
Matthew Grilli
Keyword(s):  
Older Adults ◽  
Personal Growth ◽  
Independent Living ◽  
Meaning Making ◽  
Emotional Valence ◽  
Life Review ◽  
Younger Adults ◽  
Life Lessons ◽  
Age Segregation ◽  
Intergenerational Interaction

Abstract According to the theory of generativity, one would expect older adults to inherently feature life lessons in naturalistic conversations with younger adults. Little though, is known about the process of these conversations, and to what extent they convey wisdom characteristics. In this project, intergenerational conversations between university students and older adults living in assisted and independent living communities were analyzed to identify life lessons within older adults’ informal life reviews. In the original study, 37 young and 52 older adults engaged in an intergenerational interaction as part of an undergraduate course. These conversations were recorded with participants’ consent, and transcribed with identifying information removed. For the current project, we analyzed 15 of these recorded conversations, averaging 46 minutes each between 10 students and 5 older adults to (1) develop a coding scheme and procedure to examine life lessons in intergenerational conversations, and (2) investigate whether wisdom characteristics are embedded into life lessons shared in this context. On average, each older adult referenced 4 life lessons (SD = 2) per conversation, which were coded for the following constructs: meaning making, personal growth, emotional valence, wisdom characteristics, life lesson type, and autobiographical memory type. Exploratory analyses suggest life lessons are inherently integrated into naturalistic intergenerational conversations, and that reflectivity is the most frequently expressed wisdom characteristic. This supports previous research identifying reflectivity as key to wisdom, and to the process of generativity. Further analysis is needed to illuminate the value of intergenerational conversations, particularly in a time of age segregation and ageism.

The pattern of force produced during approach-avoidance movements is independent of emotional valence

2021 ◽  
Author(s):  
Greg Dam ◽  
Zach Catron ◽  
Cassidy Segura Clouse
Keyword(s):  
Reaction Times ◽  
Emotional Valence ◽  
Emotional Stimuli ◽  
Approach And Avoidance ◽  
Negative Valence ◽  
Approach Behaviors ◽  
Direction Of Movement ◽  
Approach Avoidance ◽  
Positive Valence ◽  
Pushing And Pulling

Movements that include pushing away and pulling towards oneself are important avoidance and approach behaviors, respectively. Previous research has demonstrated that reaction times are more rapid when approach-like movements are undertaken in response to pleasant emotional stimuli and when avoidant movements are carried out in response to unpleasant emotional stimuli. However, few studies have directly investigated the forces applied during self-referenced approach or avoidance movements. Here we measured the sustained forces of pushing and pulling in response to emotional images. The images presented varied in ratings of emotional arousal (i.e., relaxing versus exciting) and valence (positive valence, or pleasant, versus negative valence, or unpleasant). Our results replicate previous findings that documented force produced in response to unpleasant images. Our findings also revealed that, in contrast to their impact on reaction times, the effects of emotional stimuli on the sustained forces associated with approach and avoidance responses are independent of the direction of movement.

scholarly journals Selective Age Effects on Visual Attention and Motor Attention during a Cued Saccade Task

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Wendy E. Huddleston ◽  
Brad E. Ernest ◽  
Kevin G. Keenan
Keyword(s):  
Older Adults ◽  
Visual Information ◽  
Inverse Relation ◽  
Complex Environments ◽  
Younger Adults ◽  
Attentional Resources ◽  
Easy Condition ◽  
Increased Risk ◽  
Saccade Task ◽  
Correct Saccade

Objective. Visual information is often used to guide purposeful movement. However, older adults have impaired responses to visual information, leading to increased risk for injuries and potential loss of independence. We evaluated distinct visual and motor attention contributions to a cued saccade task to determine the extent to which aging selectively affects these processes.Methods. Nineteen healthy young (18–28 years) and 20 older (60–90 years) participants performed a cued saccade task under two conditions. We challenged motor attention by changing the number of possible saccade targets (1 or 6).Results. Older adults had difficulty in inhibiting unwanted eye movements and had greater eye movement inaccuracy in the hard condition when compared to the younger adults and to the easy condition. Also, an inverse relation existed between performance on the visual and motor components of the task in older adults, unlike younger adults.Conclusions. Older adults demonstrated difficulty in both inhibiting irrelevant saccade targets and selecting correct saccade endpoints during more complex tasks. The shift in relations among attention measures between the younger and older participants may indicate a need to prioritize attentional resources with age. These changes may impact an older adult’s ability to function in complex environments.

scholarly journals Cultural Relevance Reduces the Enhanced Neural Processing of Positively Valenced Information in Older Adults

2019 ◽  
Vol 75 (10) ◽  
pp. 2075-2085 ◽  
Author(s):  
Xianmin Gong ◽  
Helene H Fung ◽  
Ginger Qinghong Zeng ◽  
Chun-Yu Tse
Keyword(s):  
Older Adults ◽  
Cognitive Processing ◽  
Principal Component ◽  
Emotional Valence ◽  
Cultural Relevance ◽  
Younger Adults ◽  
Positivity Effect ◽  
Age Related ◽  
Older Chinese ◽  
Dual Route Model

Abstract Objectives This study investigated (a) whether the age-related enhancement in processing positive relative to negative emotional information happened at the early and/or late processing stages and (b) if the age-related positivity effect was modulated by cultural relevance using event-related brain potential (ERP). Methods Seventeen younger and 19 older Chinese adults judged the emotional valence of Chinese and Western pictures while electroencephalogram (EEG) was recorded and analyzed by temporospatial principal component analysis to dissociate the processing stages. Results (a) Larger N100 for negative than positive pictures was observed in younger, but not older adults, while older but not younger adults showed larger late anterior P300 for positive than negative pictures. (b) Older adults showed larger early posterior P300 for positive than negative Western pictures, but not culturally relevant Chinese pictures; such modulation effect by cultural relevance was absent in younger adults. Discussion These findings suggest an age-related decrease in sensitivity to negative information in the earlier stage and an age-related increase in sensitivity to positive information in the later stage of cognitive processing. This supports a dual-route model of the age-related positivity effect. Moreover, the age-related positivity effect is more evident for stimuli with less cultural relevance.

An Information Processing Approach to the Problem of Medication Noncompliance among Older Adults

1988 ◽  
Vol 32 (3) ◽  
pp. 189-193 ◽  
Author(s):  
Jill Annette Strawbridge
Keyword(s):  
Older Adults ◽  
Information Processing ◽  
Cognitive Processing ◽  
Reaction Times ◽  
Error Rates ◽  
Specific Question ◽  
Younger Adults ◽  
Medication Noncompliance ◽  
Mental Operations ◽  
Information Processing Approach

A preliminary experiment was conducted to investigate a cognitive processing explanation for prescription drug noncompliance among older adults. The experimental construct tested was that the dynamic underlying the misinterpretation of many medicine directives is directly related to the number of mental operations that each format requires in order to answer a specific question about dosage information. Reaction times and error rates were found to follow a pattern of results which supports the hypotheses for both older and younger adults. Increasing the number of mental operations was found to be most detrimental to the performance of adults age 75 years and older.

scholarly journals The neural bases of multimodal sensory integration in older adults

2021 ◽  
pp. 016502542097936
Author(s):  
Michele T. Diaz ◽  
Ege Yalcinbas
Keyword(s):  
Older Adults ◽  
Age Groups ◽  
Reaction Times ◽  
Superior Temporal Gyrus ◽  
Mcgurk Effect ◽  
Neural Basis ◽  
Younger Adults ◽  
Age Related ◽  
Neural Bases ◽  
Multisensory Input

Although hearing often declines with age, prior research has shown that older adults may benefit from multisensory input to a greater extent when compared to younger adults, a concept known as inverse effectiveness. While there is behavioral evidence in support of this phenomenon, less is known about its neural basis. The present functional MRI (fMRI) study examined how older and younger adults processed multimodal auditory-visual (AV) phonemic stimuli which were either congruent or incongruent across modalities. Incongruent AV pairs were designed to elicit the McGurk effect. Behaviorally, reaction times were significantly faster during congruent trials compared to incongruent trials for both age-groups, and overall older adults responded more slowly. The interaction was not significant, suggesting that older adults processed the AV stimuli similarly to younger adults. Although there were minimal behavioral differences, age-related differences in functional activation were identified: Younger adults elicited greater activation than older adults in primary sensory regions including superior temporal gyrus, the calcarine fissure, and left postcentral gyrus. In contrast, older adults elicited greater activation than younger adults in dorsal frontal regions including middle and superior frontal gyri, as well as dorsal parietal regions. These data suggest that while there is age-related stability in behavioral sensitivity to multimodal stimuli, the neural bases for this effect differed between older and younger adults. Our results demonstrated that older adults underrecruited primary sensory cortices and had increased recruitment of regions involved in executive function, attention, and monitoring processes, which may reflect an attempt to compensate.

scholarly journals Positivity effect in aging: Evidence for the primacy of positive responses to emotional ambiguity

2020 ◽  
Author(s):  
Nathan M. Petro ◽  
Ruby Basyouni ◽  
Maital Neta
Keyword(s):  
Older Adults ◽  
Positive Emotions ◽  
Reaction Times ◽  
Positive Bias ◽  
Younger Adults ◽  
Bottom Up ◽  
Positivity Effect ◽  
Negative Valence ◽  
Amygdala Activity ◽  
Shed Light

AbstractOlder compared to younger adults show greater amygdala activity to positive emotions, and are more likely to interpret emotionally ambiguous stimuli (e.g., surprised faces) as positive. While some evidence suggests this positivity effect results from a relatively slow, top-down mechanism, others suggest it emerges from early, bottom-up processing. The amygdala is a key node in rapid, bottom-up processing and patterns of amygdala activity over time (e.g., habituation) can shed light on the mechanisms underlying the positivity effect. Younger and older adults passively viewed neutral and surprised faces in an MRI. Only in older adults, we found that amygdala habituation was associated with the tendency to interpret surprised faces as positive or negative (valence bias), where a more positive bias was associated with greater habituation. Interestingly, although a positive bias in younger adults was associated with slower reaction times, consistent with an initial negativity hypothesis in younger adults, older adults showed faster ratings of positivity. Together, we propose that there may be a switch to a primacy of positivity in aging.

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