Age differences in feeling-of-knowing and confidence judgments as a function of knowledge domain.

For two semantic knowledge domains, general and computer-related, feeling-of-knowing (FOK) and confidence level (CL) ratings and their relative accuracy were assessed in young, middle-aged, and older adults, after test difficulty was equated across age groups. Global memory self-efficacy beliefs were also assessed for each domain. As expected, greater age was associated with poorer memory self-efficacy beliefs only in the computer domain. The oldest two groups were found to be more underconfident than young adults when rating their FOK but not their CL, for computer items but not for general items. Statistical control of age differences in memory self-efficacy beliefs in the relevant domain greatly reduced this age effect on computer-related FOK ratings. This finding suggests that absolute FOK judgments are more closely related to memory self-efficacy beliefs than are CL judgments. Gamma correlations between judgments and recognition performance revealed that all age groups were equally accurate in FOK and in CL judgments, in both domains. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Accuracy of feeling-of-knowing judgments for predicting perceptual identification and relearning.

The feeling of knowing (FOK) refers to predictions about subsequent memory performance on previously nonrecalled items. The present research explored predictive accuracy with 2 new FOK criterion tests (in addition to recognition): relearning and perceptual identification. In 2 experiments, Ss attempted to recall the answers to general information questions, then made FOK predictions for all nonrecalled answers, and finally had a criterion test to assess the accuracy of the FOK predictions. Exp I, conducted with 32 undergraduates, demonstrated that perceptual identification can be employed successfully as a criterion test for the feeling of knowing FOK. This opens a new way for metamemory research via perception. Moreover, the FOK accuracy for predicting perceptual identification was not significantly correlated with the FOK accuracy for predicting recognition, in accord with the idea that these 2 tests assess memory differently. Exp II, conducted with 77 undergraduates, demonstrated that relearning performance can also be predicted by FOK judgments. Overall results show that there is a positive relationship between the FOK and the amount of time elapsing before a memory search is terminated during recall. (76 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Confidence level and feeling of knowing for episodic and semantic memory: an investigation of lorazepam effects on metamemory

The effects of lorazepam (0.026 or 0.038 mg/kg), a benzodiazepine, and of a placebo on metamemory, i.e. knowledge about one's own memory capabilities, were investigated in 36 healthy volunteers. Accuracy of confidence levels (CL) in the correctness of recalled answers and accuracy of feeling of knowing (FOK) the answers when recall fails were measured using a sentence memory task assessing episodic memory and a task consisting of general information questions and assessing semantic memory. Lorazepam impaired episodic memory. Unexpectedly, it also impaired performance in both the recall and recognition phases of the task assessing semantic memory, suggesting that it decreased the ability to distinguish between correct and incorrect information. In episodic memory, lorazepam 0.038 mg/kg-treated subjects exhibited an impaired CL accuracy, compared to placebo-treated subjects, and their FOK accuracy was at chance. In semantic memory, their overall CL and FOK accuracy was apparently spared. However, these subjects selectively overestimated their CL judgements for incorrect answers; moreover, secondary analyses showed that FOK accuracy for a subset of low-accuracy items was virtually nil. These results suggest that lorazepam impairs metamemory for both episodic and semantic memory.     

La validité du sentiment de savoir au rappel et à la reconnaissance.

Describes feeling of knowing (FOK), which consists of 3 phases: (1) Ss' knowledge is tested, usually with a recall test. (2) Ss predict subsequent memory performance on items that were not recalled. (3) Accuracy of FOK predictions is evaluated against a criterion test. The present study determined whether similar results would be obtained when all items were considered, instead of only those having previously led to recall failure, and compared the predictive accuracy of individual FOK with that of average FOK and average item difficulty in different memory tasks. Results showed individual FOK to be a poor predictor of performance in forced-choice recognition tasks. Gammas increased when the validity of individual FOK was computed over all items. However, the validity of the other predictors also increased, so that average item difficulty remained the best predictor of performance in recognition tasks. (French & English abstracts) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How do we know that we know? The accessibility model of the feeling of knowing

Even when Ss fail to recall a solicited target, they can provide feeling-of-knowing (FOK) judgments about its availability in memory. Most previous studies addressed the question of FOK accuracy, only a few examined how FOK itself is determined, and none asked how the processes assumed to underlie FOK also account for its accuracy. The present work examined all 3 questions within a unified model, with the aim of demystifying the FOK phenomenon. The model postulates that the computation of FOK is parasitic on the processes involved in attempting to retrieve the target, relying on the accessibility of pertinent information. It specifies the links between memory strength, accessibility of correct and incorrect information about the target, FOK judgments, and recognition memory. Evidence from 3 experiments is presented. The results challenge the view that FOK is based on a direct, privileged access to an internal monitor.     

Developmental aspects of the feeling of knowing.

Prior reports that feeling-of-knowing (FOK) accuracy increases through childhood and remains constant during adulthood are inconclusive because (a) they used absolute FOK judgments that can be contaminated by differences in the threshold for claiming to know, (b) they used measures of FOK accuracy that are not invariant across different degrees of recognition-test difficulty, and (c) they did not rule out the possibility that age-related differences in FOK accuracy may be caused by changes in the reliability of FOK judgments. We avoided these methodological problems in two studies by using relative FOK judgments, by computing Goodman-Kruskal gamma coefficients to assess FOK accuracy, and by assessing the test–retest reliability of the subjects' FOK judgments. We found that 6-year-olds had less reliable FOK judgments but greater FOK accuracy than 10-year-olds or 18-year-olds. Moreover, 18- and 70-year-olds had equally reliable FOK judgments and equivalent FOK accuracy. Possible reasons for the greater FOK accuracy of youngsters included their lower rate of commission errors and more frequent recognition of correct answers for their commissions. Implications are drawn for the study of metacognitive development. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceptions of puberty: Adolescent, parent, and health care personnel.

This study was designed (a) to examine relations among ratings of pubertal stage by adolescents, parents, and health care personnel, and (b) to determine if accuracy of adolescent and parent ratings varied with stage of puberty. Ss were 90 healthy adolescents: 46 boys, ages 10–15, and 44 girls, ages 9–15, and their parents. Ss were shown photos of the 5 stages of puberty (Tanner criteria). Ss rated the adolescents" pubertal stage, and a nurse practioner completed an examination to rate the adolescents" stage. Correlations between adolescent and examiner ratings ranged from r?=?.77 to r?=?.91 (p?≤?.001, κ?=?.33 to .50), and between parent and examiner from r?=?.75 to r?=?.87 (p?≤?.001, κ?=?.13 to .55). When inaccurate, Ss ratings were lower than examiner ratings and less accurate at later stages of puberty. Use of adolescent and parent ratings is limited if precise ratings of stage are necessary to answer a research question. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A comparison of three predictors of an individual's memory performance: The individual's feeling of knowing versus the normative feeling of knowing versus base-rate item difficulty.

Compared the memory performance predictions of 168 undergraduates with normative item-difficulty predictions and with normative feeling-of-knowing (FOK) predictions. Ss attempted to recall the answers to general-information questions, made FOK judgments on nonrecalled items, and were subsequently administered a criterion test (relearning, perceptual identification, or 1 of 2 versions of recognition). Results indicate that, for predicting an S's criterion performance, the S's own FOK predictions were intermediate between 2 kinds of normative predictions: Ss' FOK predictions were more accurate than predictions derived from normative FOK ratings but were less accurate than predictions derived from base-rate item difficulty (normative probabilities of correct recall). Subsidiary analyses showed that factors other than unreliability were responsible for the partial inaccuracy of Ss' FOK. Possible ways to improve the accuracy of an individual's FOK predictions are discussed. (32 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The recognition potential, word difficulty, and individual reading ability: On using event-related potentials to study perception.

Ten observers detected words in a stream of random letters. The latency of the recognition potential (RP) was less for easier words. This implicated short latency processes in word detection. Reaction time (RT) and P3 latency decreases with training were attributed to improved motor preparation. The RT decrease with training was correlated with P3 (r?=?.67), but not RP (r?=?.04), latency reduction. P3 latency did not predict individual RT (r?=?.20), but RP latency did (r?=?.66). Twenty other subjects took the Verbal portion of a Graduate Record Examination to test whether the RP might be a better predictor of individual differences than P3. RP latency predicted a person's reading score (r?=?–.74), but P3 latency did not (r?=?.08). The word-difficulty effect and the shorter RP latency observed for superior readers supported the idea that the RP reflects perception that is based on language skill. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dissociating knowing and the feeling of knowing: Further evidence for the accessibility model.

Predictions derived from the accessibility model of the feeling of knowing (FOK; A. Koriat, 1993) were tested regarding the basis of FOK and the reason for its accuracy. According to the model, FOK monitors the accessibility of partial information about unrecallable targets, and its validity depends on the accuracy of that information. General knowledge questions were classified in terms of their tendency to precipitate answers in recall (accessibility, or ACC), and the proportion of such answers that were correct (output-bound accuracy, or OBA). FOK increased with increasing ACC independent of actual recognition memory, and the FOK recognition correlation varied dramatically with OBA: It was positive for high-OBA questions, but nil or negative for low-OBA questions. The results suggest that people have no privileged access to the contents of their memory over and above what they can retrieve from it. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Foundations for a model of knowing: I. Constructing reality.

Contends that traditional views of knowledge are being challenged. An emerging "constructivist" perspective, as proposed by G. Kelly (1955, 1967), an engineer turned clinician, suggests that to a large degree individuals construct reality. In his "constructive alternativism" Kelly assumes that people validate their hypotheses and beliefs through subjectively construed goodness-of-fit criteria applied to perceived differences between anticipations and feedback. His model of construing is compatible with those emerging in the history and philosophy of science and in cognitive psychology. Nevertheless, constructivists must answer a perplexing question: How can fallible knowledge, constructed as it is from abstracted and incomplete representations of objects and events, capture and maintain one's confidence, as it does, and furthermore prove highly functional, as it does? (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Episodic memory and metamemory in Parkinson’s disease patients.

This study investigated episodic memory and metamemory for verbs and nouns in patients who have cognitive impairments associated with Parkinson’s disease (PD). PD patients and healthy control participants were asked to recall word pairs and provide feeling-of-knowing (FOK) judgments for the items they were unable to recall. This was followed by a 4-alternative recognition test. PD patients were impaired in both recall and recognition, compared with controls. In terms of metamemory, PD patients were less confident in their ability to recognize the unrecalled items in a future recognition test. Most important, accuracy of PD patients’ FOK judgments was not above chance and was lower than that of control participants. The PD group correctly recognized fewer verbs than nouns, but type of material (verb vs. noun) had no impact on recall or FOK judgments. In addition, contribution of executive functions to FOK accuracy was different in PD patients and controls. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Feeling-of-knowing in fact retrieval: further evidence for preservation in early Alzheimer's disease

The ability to retrieve and monitor factual information varying in datedness (i.e., dated vs. contemporary) was examined in healthy older adults and patients in an early phase of Alzheimer's disease (AD). Subjects were given free recall and multiple-choice recognition tests of 48 general knowledge questions. For all questions not responded to in recall, subjects made feeling-of-knowing (FOK) judgments. Results indicated dementia-related deficits in both recall and recognition, although both groups showed better recall and recognition with the dated compared with the contemporary questions. Importantly, despite deficits in fact retrieval, the AD patients showed intact monitoring of stored knowledge, as indicated by equivalent FOK accuracy for both groups. In addition, FOK accuracy was similar for the dated and the contemporary information in both groups, suggesting independence between level of general knowledge and the ability to supervise information stored in memory.     

Context affects feeling-of-knowing accuracy in younger and older adults.

In feeling of knowing (FOK) studies, participants predict subsequent recognition memory performance on items that were initially encoded but that cannot presently be recalled. Research suggests that FOK judgment magnitude may be influenced by the total amount, or quantity, of contextual information retrieved related to the unrecalled target (e.g., Koriat, 1993). The present study examined the contribution of quality of that information to episodic FOK judgments. In addition, we tested whether the episodic FOK deficit demonstrated by older adults could be reduced by encouraging retrieval of contextual information relevant to the target. Three experiments demonstrated that quality of the retrieved partial information influenced FOK judgments in both older and younger adults; however, the manifestation of that influence was age dependent. The results also indicated that older adults required explicit retrieval of contextual information before making FOK judgments in order to make accurate FOK predictions. The results suggest that FOK accuracy may be partially determined by search processes triggered when participants are queried for contextual information. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Feeling more than we can know: Exposure effects without learning.

It is generally assumed that some form of learning, such as recognition, both precedes and mediates the affective response. The present study questioned that assumption by seeking to obtain positive exposure effects in the absence of stimulus recognition. To unconfound affect and learning effects, 2 experiments with 48 undergraduate females employed a dichotic-listening procedure for stimulus exposure, in which the critical stimuli were exposed on the unattended channel. Reliable attitudinal enhancement toward objectively familiar stimuli was obtained in both experiments, even though recognition levels were low (Exp I) or at chance levels (Exp II). Subjective stimulus familiarity was not a significant predictor of affect in either experiment. It is concluded that positive feelings toward a previously encountered object are not dependent on consciously knowing or perceiving that the object is familiar. (36 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conceptual automaticity in recognition memory: Levels-of-processing effects on familiarity.

Examined the effect of level of processing (LP) on recognition memory using 2 response-signal delays (RSD; 500 and 1500 msec). In Exp 1, LP (semantic or nonsemantic) and RSD were manipulated between 24 college students. In Exp 2, orienting task (pleasantness rating or letter judgment) and RSD were manipulated among 32 Ss. In Exp 3, study orientation and test instructions (inclusion or exclusion) were within-S factors, and RSD was a between-S factor. 32 Ss were included in Exp 3. In Exp 1, a modality effect was found for fast responses. The LP was reliable at both points in time. In Exp 2, fast responses were associated with significantly more "false-alarms" to words encoded semantically than those encoded nonsemantically. In Exp 3, both recollection and familiarity estimates were elevated by prior conceptual processing. Estimates of recollection were affected by RSD. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Depression and immunity: A meta-analytic review.

A meta-analysis indicated that clinical depression was associated with several large alterations in cellular immunity. Analyzing only methodologically sound studies, reliable immune alterations included lowered proliferative response of lymphocytes to mitogens (effect size rs?=?.24–.45), lowered natural killer cell activity (r?=?.28), and alterations in numbers of several white blood cell populations (rs?=?.11–.77). Immune alterations were greater in both older and hospitalized samples. There was also evidence of a linear relation between intensity of depressive affect and indicators of cellular immunity. Estimates of sample sizes needed to detect reliable effects for each immune outcome are provided. How neuroendocrine mechanisms or health practices might link depression to immunity is discussed, and design features needed to better understand these pathways are specified. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An epidemiological investigation of eperythrozoon infection in human and animals (II)

This is the second of two studies done to determine whether moderate Gz exposure facilitates back disability. Cumulative trauma (repeated moderate to high G) exposures could be a precipitant of back pain in the military population. There is at present no reliable method of predicting who will suffer from back pain. We looked at officer back disability rates at separation from the Air Force (1972-1993). We compared non-rated Air Force officers to pilots and navigators exposed to low G and moderate to high G. We found no significant differences between aircrew and non-aircrew individuals until 1985, when the rates for aircrew fell below those of non-rated officers. Moderate G exposure does not seem to be a predictor of subsequent back disability. We recommend a larger prospective study of all rated and non-rated officers. We recommend that each separating officer undergo a detailed physical examination and answer a detailed back questionnaire.     

Aging, episodic memory feeling-of-knowing, and frontal functioning.

Groups of normal old and young adults made episodic memory feeling-of-knowing (FOK) judgments and took 2 types of episodic memory tests (cued recall and recognition). Neuropsychological tests of executive and memory functions thought to respectively involve the frontal and medial temporal structures were also administered. Age differences were observed on the episodic memory measures and on all neuropsychological tests. Compared with young adults, older adults performed at chance level on FOK accuracy judgments. Partial correlations indicated that a composite measure of frontal functioning and FOK accuracy were closely related. Hierarchical regression analyses showed that the composite frontal functioning score accounted for a large proportion of the age-related variance in FOK accuracy. This finding supports the idea that the age-related decline in episodic memory FOK accuracy is mainly the result of executive or frontal limitations associated with aging. (PsycINFO Database Record (c) 2010 APA, all rights reserved)