Effect of contextual organization on spatial memory of middle-aged and older women.

Examined the memory performance of 20 women aged 31–59 yrs and 20 aged 65–85. Ss reconstructed spatial arrays, replacing miniature objects in either a contextually organized panorama or a noncontextually organized bank of cubicles. Performance of the middle-aged Ss did not differ between the 2 tasks. Older Ss performed as well as middle-aged Ss in the panorama task, but in the cubicles task their scores were lower than in the panorama task and lower than those of the younger Ss in the cubicles task. Results support the conclusion that in a task that allows the use of existing contextual organization as a memory aid, age differences in memory performance disappear. Age differences may be limited to tasks that remove previously learned relationships between items (as in recall of lists of unrelated words), requiring Ss to invent an organizational structure to facilitate recall. Though such tasks predominate in research, they probably do not represent the memory problems met in everyday life, especially by older adults. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Orienting tasks as moderators of narrative and expository text recall in adulthood.

Incidental narrative and expository prose memory of 60 older adults (mean age 71.6 yrs) and 60 younger adults (mean age 23.6 yrs) was assessed following orienting tasks that emphasized either relational (sentence scrambling) or individual proposition (letter deletion) information or following a control condition. Orienting tasks were done capably, but older adults took longer and made more errors on the letter-deletion task than did younger adults. Age differences in recall were observed consistently for expository texts, but for narrative texts, age differences in recall were observed only when letters were deleted. If orienting tasks overtax older adults' processing resources or emphasize shallow information, recall gains may be minimal. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aging and the effects of affective and factual focus on source monitoring and recall.

Pairs of young (aged 17–29 yrs) and elderly (aged 64–77 yrs) Ss participated in a short play and were then instructed to talk about factual or affective aspects of the play or to talk about the play without any particular focus suggested. In both the affective and control condition, older adults' ability to discriminate what they had said from what the other person had said was poorer than that of young adults. In contrast, when induced to focus on the factual content of the events, older Ss' source monitoring improved, and the age difference was reduced. The pattern was similar when Ss' ability to discriminate what they had said from what they had thought was examined. Furthermore, affective focus lowered the overall level of recall for both young and older Ss and led older Ss, in particular, to introduce more elaborations into their recall. The possibility that age differences in remembering content and source are related to type of focus is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Semantic activation and episodic memory: Age similarities and differences.

In 2 experiments, 48 19–35 yr olds and 48 59–75 yr olds were engaged in semantic and nonsemantic orienting tasks and were subsequently given incidental or expected recall and recognition tasks. Reaction time (RT) patterns from the orienting tasks suggested that all Ss experienced similar semantic activation during encoding. Under incidental conditions, age differences in memory performance were minimal. When memory tests were expected, younger Ss recalled and recognized more items than did older Ss, suggesting that younger Ss were more effective in their deployment of mnemonic strategies. The age difference was particularly pronounced for unattended items, which suggests an age difference in the capacity to encode all of the episodic information. (31 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adult age differences in cued recall.

Examined the relative effectiveness of semantic and structural retrieval cues in 72 male college graduates of 3 age groups: Group 1 (aged 20–39 yrs), Group 2 (aged 40–59 yrs), and Group 3 (aged 60–80 yrs). The Ss had been administered 2 subtests of the WAIS to insure the compatibility of the Ss. Results of the recall tests show that there was significantly poorer recall by the older Ss in the noncued conditions (free recall) and in the cued condition when structural cues were used. When category labels were used as semantic cues, however, the age deficit in recall was eliminated. Results are discussed in terms of both a retrieval hypothesis and a processing-deficit hypothesis. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differential memory changes with age: Exact retrieval versus plausible inference.

Conducted 2 experiments on the use of direct retrieval and plausibility memory strategies in elderly and college-age adults. In Exp I, which used an episodic memory task, data were obtained from 49 65–80 yr old college alumni and from 58 college students who had served in a previous study by the 1st author (see record 1983-02731-001). Findings indicate that older Ss effectively used the plausibility strategy but performed more poorly than younger Ss when the direct retrieval strategy was required. Results of Exp II, using 18 college alumni (8 Ss aged 20–31 yrs, 10 Ss aged 64–75 yrs) with a semantic memory task, show that older Ss' accuracy was essentially undistinguishable from that of younger Ss as long as a plausibility judgment process produced the correct response. It is argued that careful inspection is a much more costly process for older adults than it is for young adults but that plausibility judgments and feature overlap processes are equally easy for both age groups. (44 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Remote memory: Recalling autobiographical and public events from across the lifespan.

Examined the recall of autobiographical (ATB) and public events across the lifespan among 24 middle-aged (40–55 yrs old) and 24 older (aged 65–75 yrs) individuals. Ss were asked to recall events from specific time periods across their lifespan. The 4 tasks differed in their nature of the episodes requested (ATB or public) and whether recall was word-cued or nonword-cued. Verification of public events was assessed archivally, while ATB events were verified by relatives of a subgroup of the Ss and reported events. Memory for public events decreased with increased age of Ss, but this effect generally did not occur for the recall of ATB events. Older Ss recalled an equal number of ATB episodes from all life segments, whereas recall of news events tended to decrease with remoteness of the episode. Findings suggest that generalizations regarding age or time-related deficiencies are unwarranted. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age differences in incidental learning.

Examined the effects of age and of incidental-learning tasks on recall of a categorized word list. Ss were 50 18-30 yr old college students and 50 55-65 yr old teachers. The control groups were instructed to remember the words; incidental-learning groups performed orienting tasks, but were not informed that they would have to recall the words. 2 orienting tasks required that Ss process the meaning of the words; the other 2 orienting tasks did not involve semantic processing. Analysis of the free-recall data indicates that the semantic processing tasks led to much greater recall and organization of recall than the nonsemantic orienting tasks. In recall, there was a significant interaction between age and orienting task, with old Ss only manifesting incidental learning that was inferior to young Ss, whose orienting task involved semantic processing. The findings indicate that the presence or absence of an age-related decrement in incidental learning is predictable from the depth of processing of the incidentally acquired material. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Temporal memory for performed activities: Intentionality and adult age differences.

Investigated rehearsal independency and the age insensitivity of temporal memory for prior performances on various tasks, using 36 young (aged 18.08–29.83 yrs) and 36 older (aged 60.25–85.83 yrs) adults. Ss performed under varying incidental/intentional memory conditions on 16 tasks (e.g., dot connection, card rotation, maze tracing) assigned to 4 time blocks separated by rest breaks. Following the last task, Ss received 2 tests of temporal memory. The first required identifying the time block in which each task was performed; the second required reconstructing the serial order in which the tasks had been performed. Temporal memory proficiency was equivalent under incidental and intentional memory conditions for each measure at each age level, thus supporting the rehearsal-independent nature of this form of episodic memory. However, an age deficit was present for each measure. Thus, temporal memory for performed activities appears to be age sensitive rather than age insensitive, as assumed by the automaticity of encoding hypothesis. However, the locus of age deficit in terms of the encoding stage or retrieval state of temporal memory remains undetermined. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A developmental study of recall from natural categories.

27 6th graders, 25 college students, and 26 older adults (aged 57–77 yrs) were asked to list exemplars from the semantic domains of animals and occupations for 6 min each. Cumulative recall curves were found to fit a hyperbolic model of recall and to be stable over age in the animal domain; in the occupation domain, 6th graders reached asymptote earlier. A slope-difference algorithm was used to identify clusters within recall. It was found that the size of clusters was stable over time. Older adults tended to find new clusters at a faster rate in the later stages of recall, and the youngest and oldest Ss reported items within clusters at a slower rate. Results demonstrate the stability of some basic functions in semantic memory and support a production deficiency view of reported deficits in episodic memory tasks. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comprehension of pronouns in young and older adults.

Explored, in 3 experiments, the issue of whether young (19–37 yrs old) and older (57–84 yrs old) adults differ in their use of pragmatic information in anaphor resolution. 64 Ss from each age group were required to select the antecedent for the pronoun he in sentence pairs such as "Henry spoke at a meeting while John drove to the beach. He brought along a surfboard." Results indicate that young and older Ss were equally influenced by contextual constraints in choosing pronoun referents when the sentence containing the pronoun followed immediately after the context-setting sentence. When extraneous material intervened, however, both age groups became less consistent in their pronoun choices, with older Ss being more affected. Evidence is presented that the failure to use pragmatic constraints in pronoun assignment resulted from inability to recall the relevant contextual information. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of orienting tasks on the recall and recognition performance of subjects differing in age.

Investigated the recall and recognition performance of 498 adults in 3 age groups (20–39, 40–59, and 60–80 yrs) following different orienting-task requirements. It was demonstrated that young and old adults are differentially affected by task requirements. The youngest group was disproportionately benefited by an orienting task that involved semantic processing. Results support the notion of an age-related processing deficit. (3 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age, gender, and individual differences in memory failure appraisal.

Young adults (22 men and 24 women) and older adults (24 men and 24 women) rated 12 gender-neutral vignettes describing short-term, long-term, and very-long-term memory failures. Vignette target persons were young (aged 21–32 yrs) or older (aged 65–75 yrs) men or women. Ss of both age and gender groups used a double standard: Failures of older targets of both genders were rated as signifying greater mental difficulty than failures of young targets; failures of young targets were attributed to lack of effort and attention. Young Ss judged very-long-term failures more harshly than did older Ss. Ss' objective memory performance, self-rated memory failure frequency, memory failure discomfort, and depression made little difference in their target person ratings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Do ability-performance relationships differentiate age and practice effects in visual search?

Investigated relationships between abilities and performance in visual search for 70 young (aged 17–31 yrs) and 70 old adults (aged 65–80 yrs). Ss received extensive practice on a category search task. A consistent version allowed development of an automatic attention response; a varied version allowed general performance improvements. Transfer conditions assessed learning. General ability, induction, semantic knowledge, working memory, perceptual speed, semantic memory access, and psychomotor speed were assessed. LISREL models revealed that general ability and semantic memory access predicted initial performance for both age groups. Improvements on both the consistent and the varied tasks were predicted by perceptual speed. Ability–performance relationships indexed performance changes but were not predictive of learning (i.e., automatic process vs general efficiency). Qualitative differences in the ability-transfer models suggest age differences in learning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Visual Reproduction subtest: Standardization and clinical validation of a delayed recall procedure.

Provided a normative database for a delayed recall procedure using the Visual Reproduction subtest from Form I of the Wechsler Memory Scale and examined the test's clinical sensitivity in 4 groups of patients. Normative data were based on 255 neurologically normal adults (aged 18–91 yrs). Clinical groups included 103 patients with severe head trauma, left hemisphere cerebrovascular accident (CVA), right hemisphere CVA, and Alzheimer's disease (mean ages 28.85, 63.46, 64.21, and 64.85 yrs, respectively). Normative data revealed significant age-related differences, with older Ss performing lower on both immediate and delayed recall tasks. Ss in all 4 clinical groups performed significantly below age-matched controls. Visual Reproduction scores correlated positively with measures of visual-spatial ability, verbal memory, and visual memory. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Further testing of limits of cognitive plasticity: Negative age differences in a mnemonic skill are robust.

Extended earlier testing-the-limits research on age differences in cognitive plasticity of a memory skill by 18 additional assessment and training sessions to explore whether older adults were able to catch up with additional practice and improved training conditions. The focus was on the method of loci, which requires mental imagination to encode and retrieve lists of words from memory in serial order. Of the original 37 Ss, 35 (16 young, aged 20–30 yrs, and 19 older adults, aged 66–80 yrs) participated in the follow-up study. Older adults showed sizable performance deficits when compared with young adults and tested for limits of reserve capacity. The negative age difference was substantial, resistant to extensive practice, and applied to all Ss studied. The primary origin for this negative age difference may be a loss in the production and use of mental imagination for operations of the mind. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Episodic memory functioning in a community-based sample of old adults with major depression: Utilization of cognitive support.

Community-based samples of old adults with current major depression (n?=?17; mean age 83.29 yrs) and healthy old adults (n?=?51; mean age 83.29 yrs) were examined on a variety of episodic recall and recognition tasks. Results indicate depression-related deficits in recall that were reduced but not eliminated, in recognition. Control Ss were able to utilize cognitive support in the form of more study time and item organizability in free recall, whereas depressed Ss were not. However, both groups showed equal gains from the provision of category cues and beneficial effects of prior knowledge and more study time in recognition. Results suggest that depression results in deficits in effortful, elaborate processes at encoding and retrieval and that old age depression is associated with a reduced ability to utilize cognitive support to improve episodic memory. Depressed older adults appear to require cognitive support at both encoding and retrieval to demonstrate memory facilitation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aging and the priming of newly learned associations.

In each of 2 experiments, 32 young (aged 18–25 yrs) and 32 elderly (aged 63–79 yrs) adults studied 36 sentences of the form NOUN1-VERB-NOUN2. They then made item-recognition judgments regarding whether single nouns had occurred in the sentences. After 2 or more presentations of each sentence, both young and elderly Ss showed equivalent priming between the nouns within the sentences; a noun was recognized faster when it was tested immediately after the other noun from the same sentence than when it was tested following a noun from a different sentence. After only 1 presentation of each sentence, young Ss showed priming but elderly Ss did not. Under all study conditions, young Ss were superior to the elderly in cued recall of the same sentences. It is argued that priming provides a sensitive measure of what is stored in memory and so will be useful for studies of aging. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How much and how fast: Rapid processing of spoken language in later adulthood.

Conducted 2 experiments, using 36 older adults (aged 61–82 yrs) and 24 undergraduates, in which Ss listened to and immediately recalled sentences that were systematically varied in speech rate and number of propositions. Although recall performance of the older Ss showed a disproportionate decline when speech rate was increased, older Ss, as well as the younger Ss, were able to recall sentences of increasing propositional densities. It was also found that the tendency to recall a greater proportion of main ideas than details (the levels effect) was enhanced by increased propositional density and depressed by increased speech rate and increased age. These results are discussed in terms of an age-related change in the rate at which information can be processed in working memory. (37 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)