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PubMed2002

Effects of processing style and age on schema acquisition.

Age differences in schema acquisition were examined using a task in which participants read paragraphs about a character and learned to predict his behavior. Successful performance depended on learning which information in the paragraphs was related to the behavior. Because these predictive traits were arbitrarily selected, prior experience was of no benefit. Twenty-eight young adults (ages 18 to 25) and 28 older adults (ages 60 to 80) participated in this experiment. The young adults performed better overall than the older adults. However, when we reexamined the data by considering processing style (i.e., whether individuals relied on a data-driven or conceptually driven processing style), we found that young and older adults who tested specific hypotheses were similar, whereas the older adults who tried to rely on general impressions performed poorly. Findings indicate that it is critical to determine how people approach cognitive tasks and that some older adults are likely to engage in conceptually driven processing regardless of its relevance to a particular task.

Adolescent↗
PubMed2006

Children hear the forest.

How do children develop the ability to recognize phonetic structure in their native language with the accuracy and efficiency of adults? In particular, how do children learn what information in speech signals is relevant to linguistic structure in their native language, and what information is not? These questions are the focus of considerable investigation, including several studies by Catherine Mayo and Alice Turk. In a proposed Letter by Mayo and Turk, the comparative role of the isolated consonant-vowel formant transition in children's and adults' speech perception was questioned. Although Mayo and Turk ultimately decided to withdraw their letter, this note, originally written as a reply to their letter, was retained. It highlights the fact that the isolated formant transition must be viewed as part of a more global aspect of structurein the acoustic speech stream, one that arises from the rather slowly changing adjustments made invocal-tract geometry. Only by maintaining this perspective of acoustic speech structure can we ensure that we design stimuli that provide valid tests of our hypotheses and interpret results in a meaningful way.

Adolescent↗
PubMed2005

Eyetracking and selective attention in category learning.

An eyetracking version of the classic Shepard, Hovland, and Jenkins (1961) experiment was conducted. Forty years of research has assumed that category learning often involves learning to selectively attend to only those stimulus dimensions useful for classification. We confirmed that participants learned to allocate their attention optimally. We also found that learners tend to fixate all stimulus dimensions early in learning. This result obtained despite evidence that participants were also testing one-dimensional rules during this period. Finally, the restriction of eye movements to only relevant dimensions tended to occur only after errors were largely (or completely) eliminated. We interpret these findings as consistent with multiple-systems theories of learning which maximize information input in order to maximize the number of learning modules involved, and which focus solely on relevant information only after one module has solved the learning problem.

Association Learning↗
PubMed1997

Factors predisposing to suspected offending by adults with self-reported learning disabilities.

BACKGROUND: This study investigated factors contributing to suspected offending behaviour by adults with a history of learning disabilities taken into custody at a city police station. METHODS: Adults charged with offences, and/or leaving custody, during a defined period, were identified as having a possible learning disability using a four-item questionnaire (Lyall et al. 1995 a). A comparison group, of similar age, sex and IQ, was identified from a database of young people with learning difficulties. Information was obtained on interview about each individual's medical, psychiatric, social and family histories and psychological assessments were undertaken. RESULTS: In contrast to the comparison group, those in the 'offending' group were more likely to have a history of the following: losing contact with their father, forensic contact in one or more family members, past homelessness, illicit drug use, experiencing an excess of recent life events, self-reported behavioural problems at school, truancy, childhood police contact and contact with probation services. All had histories of repeated offending. There was also an increased rate of drug/alcohol dependence. Only two subjects in the study group had a full-scale IQ below 70. CONCLUSIONS: These differences would suggest that the presence of childhood behavioural problems, offending behaviour by other family members, family separation and other social disruption and the development of drug and alcohol related problems are potentially the most important factors in trying to understand why one group engaged in criminal behaviour. The offending group had many characteristics in common with general offending populations.

Adult↗
PubMed1992

Isoflurane anesthesia prevents unconscious learning.

We investigated whether greater than or equal to 0.6 minimum alveolar concentration (MAC) of isoflurane suppresses learning of information presented verbally. Preoperatively, we asked 45 healthy patients (aged 23-58 yr) undergoing elective surgery 15 general knowledge questions designed to arouse their curiosity. They were told that they would be given the answers during anesthesia. Anesthesia was induced with isoflurane and nitrous oxide (25 subjects also received 1.1 +/- 0.6 mg/kg of propofol). The trachea was intubated with the aid of vecuronium (0.07 mg/kg IV). Isoflurane in oxygen was given to provide 0.6 MAC before and 1.0 and 1.4 MAC during surgery. After 10 min at each of two of the three MAC levels, the answers were given to five of the questions. At the remaining concentration, patients received a message to either touch an ear (n = 30) or keep their arms still (n = 15) during the postoperative interview. Twenty-four hours later, patients were asked whether they recalled intraoperative events. They were then asked to answer the 15 questions, choosing from five possible answers to each, one of which was correct. The number of times each patient touched an ear during this interview was noted. No patient consciously recalled events during anesthesia. The number of questions answered correctly postoperatively did not differ according to whether the answers had been provided during anesthesia (at any isoflurane concentration) or had not been provided (control questions). The number of ear-touches postoperatively did not differ between those who had and had not received the intraoperative message encouraging ear-touching.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1982

Acquisition and retrieval of information in amphetamine-treated hyperactive children.

State-dependent learning and memory (retrieval) processes were examined in 15 amphetamine-treated hyperactive boys. While stimulant treatment enhanced the acquisition of information and its retrieval 24 hours later, there was no evidence of poorer retrieval of information learned in a state different from the retrieval state. Amphetamine appeared particularly to facilitate effortful cognitive processes. Subgroups of hyperactive children respond to amphetamine treatment in different ways, some showing changes in motor restlessness and others changes in cognition. The lack of dissociative effects when information is learned and recalled under different drug conditions suggests that what the stimulant-treated child learns can be effectively recovered after completion of treatment.

Attention↗
PubMed1997

A qualitative study of breast cancer self-help groups.

This study reports on the experience of women in four community breast cancer self-help groups in Ontario, Canada. Semi-structured interviews were conducted with 24 women, asking them about benefits and limitations of their group involvement, and about their perspectives on group processes and structures. Overall, participants reported their group involvement to be extremely helpful for navigating the short and long-term impact of breast cancer. Emotional support benefits included connecting with other breast cancer survivors, feeling understood and sharing experiences, providing hope, and sharing healing laughter. Informational and practical support benefits included sharing of important information and learning how to get what you want. Even where there were concerns about limitations or tensions of group experience, these occurred against a backdrop of appreciation and commitment. From the discussion of group processes and structures, a number of issues were identified as problematic. Most notable were how to deal with deaths of group members and how to balance the group's primary purpose of providing mutual support with secondary goals of dealing with group business and engaging in meaningful advocacy.

Adaptation, Psychological↗
PubMed2001

The need for comprehensive educational osteoporosis prevention programs for young women: results from a second osteoporosis prevention survey.

OBJECTIVE: To assess osteoporosis knowledge, beliefs, and preventive behaviors among young adult women and to identify sources that they would mostly likely utilize to learn more about the disease. METHODS: Information was gathered through a cross-sectional survey of 321 women (mean age 21.6 years; 63.5% were white, 29.2% were black) enrolled in a required undergraduate health course at a southeastern state university. RESULTS: Two hundred seventy-seven (86%) of the survey participants had heard about osteoporosis, but only 3.8% of respondents reported getting both adequate exercise and the recommended 1,200 mg of calcium per day. Respondents believed that they were unlikely to develop osteoporosis and that osteoporosis is less serious than other common causes of morbidity and mortality in women, such as heart disease and breast cancer (P < 0.0001). Brochures, magazines, and short counseling sessions were preferred information sources for learning about osteoporosis. CONCLUSIONS. The majority of young women studied are at risk for developing premature osteoporosis. They prefer brochures, magazines, and short counseling sessions during medical office visits to learn about osteoporosis.

Adolescent↗
PubMed1985

Application in continuing education for the health professions: chapter five of "Andragogy in Action".

Although the threat of human obsolescence confronts all of humanity, given the accelerating pace of change in our society, it has a particularly strong impact on the professions--especially the health professions. The half-life of the knowledge, skills, attitudes, and values required by physicians, nurses, allied health professionals, and pharmacists is shrinking with increasing speed. Citizens worry about being treated by health practitioners who have not kept up to date and have reacted by passing laws mandating relicensing and continuing professional education. The health care professions and institutions have responded to the threat by mounting massive programs of continuing professional education; in fact, this is probably the fastest-growing aspect of all of education. And, since the clientele of continuing professional education consists exclusively of adults, these programs have tended increasingly to be based on principles of adult learning. This chapter opens with a description of a pilot project for physicians at the University of Southern California, in which the central theme is self-directed learning. The selection presents the need for and assumptions and goals of the project and the major program components, including needs assessment, individualized learning plans, information brokering, and the use of peer resource groups. Then follow three selections focused on the continuing education of nurses. Selection 2, by the American Nurses' Association, sets forth a policy statement and guidelines for self-directed continuing education in nursing. Its provisions could easily be adapted to other professions. The application of the andragogical model to highly technical training in cardiovascular nursing at Doctors Hospital in Little Rock is presented in selection 3, and selection 4 describes an innovative inservice education program in which primary responsibility is placed on the clinical nursing units at St. Mary's Hospital in Waterbury, Connecticut.

Education, Medical, Continuing↗
PubMed2006

Molecular mechanisms of pain in the anterior cingulate cortex.

It is well known that peripheral sensory stimuli, including pain, trigger a series of neuronal activities along the somatosensory pathways as well as the neuronal network in the high brain structures. These neuronal activities not only produce appropriate physiological responses but also induce long-term plastic changes in some of the central synapses. It is believed that long-term synaptic changes help the brain to process and store new information. Such learning is critical for animals and humans to gain new knowledge of changing environment, generate appropriate emotional responses, and avoid dangerous stimuli in the future. In the case of permanent injury, however, the brain fails to distinguish the difference between "useful" and painful stimuli. Long-term synaptic changes work against the system and at least in part contribute to chronic pain. In this short article, the possible molecular mechanisms for long-term plasticity within the anterior cingulate cortex (ACC) will be discussed and reviewed, and it is hypothesized that potentiation of excitatory responses within the ACC contributes to chronic pain and pain-related mental disorders.

Animals↗
PubMed2002

Nutrition education improves metabolic outcomes among older adults with diabetes mellitus: results from a randomized controlled trial.

BACKGROUND: Few diabetes education programs have been designed specifically for older adults. This study evaluated the impact of a nutrition intervention on the blood glucose and lipoprotein levels of adults > or =65 years of age without functional limitations but with type 2 diabetes for > or =1 year. METHODS: Ninety-eight people were randomized to the experimental or control group. A pretest-posttest control group design was used to evaluate the intervention. Ninety-two people (94%) completed the study. The 10-week intervention incorporated principles from information processing, learning theory, and Social Cognitive Theory to meet the needs of older adults. Analysis of covariance compared outcomes between groups. The paired t test compared results within groups. RESULTS: Participants exceeded the guidelines for optimal glycemic control at pretest. The experimental group had greater improvements in fasting plasma glucose (P = 0.05) and glycated hemoglobin (P < 0.01) than the control group. Significantly more participants in the experimental group than control group met the treatment goals for total cholesterol at posttest (P < 0.05). CONCLUSIONS: Older adults with diabetes need additional education to achieve metabolic control. Nutrition education can improve metabolic control among this cohort. Improved metabolic outcomes reduce the morbidity and mortality associated with diabetes.

Aged↗
PubMed1977

National views: Australia.

The Austrialian scene in this area would seem to show the same features, and haze, as are found in many other countries. There is general recognition of atherosclerotic problems, of the common risk factors and of the need for prevention. Learned and informed bodies such as The Australian Academy of Science and The National Heart Foundation of Australia have made recommendations along familiar lines, involving especially dietary changes, as preventive measures. The basis for these recommendations has been a general review of the subject and doses not include anything uniquely Australian. The admission of uncertainty about causes and prevention, awareness of controversy, confusion, ignorance and a natural reluctance to change habits no doubt contribute to popular disregard for the recommendations at the present time.

Arteriosclerosis↗
PubMed1977

Job design and staff satisfaction in human service settings.

It was hypothesized that job design is systematically related to employee satisfaction. The job design variables included were: variety, task-identity, feedback, autonomy participation, learning, and information. Subjects were 137 professional and nonprofessional employees of 22 agencies providing services to children. Agencies included mental health facilities, visiting nurse associations, residential care settings, and foster placement and adoption agencies. The hypothesis was supported. The correlations between specific jog design variables and work satisfaction were examined.

Adoption↗
PubMed2005

Plant intelligence.

Intelligent behavior is a complex adaptive phenomenon that has evolved to enable organisms to deal with variable environmental circumstances. Maximizing fitness requires skill in foraging for necessary resources (food) in competitive circumstances and is probably the activity in which intelligent behavior is most easily seen. Biologists suggest that intelligence encompasses the characteristics of detailed sensory perception, information processing, learning, memory, choice, optimisation of resource sequestration with minimal outlay, self-recognition, and foresight by predictive modeling. All these properties are concerned with a capacity for problem solving in recurrent and novel situations. Here I review the evidence that individual plant species exhibit all of these intelligent behavioral capabilities but do so through phenotypic plasticity, not movement. Furthermore it is in the competitive foraging for resources that most of these intelligent attributes have been detected. Plants should therefore be regarded as prototypical intelligent organisms, a concept that has considerable consequences for investigations of whole plant communication, computation and signal transduction.

Animals↗
PubMed2005

AO-classification of thoracic and lumbar fractures--reproducibility utilizing radiographs and clinical information.

This study was designed to assess the inter-observer reliability and intra-observer reproducibility of standard radiographic evaluation of 150 thoraco-lumbar fractures using the AO-classification. The influence of clinical information on agreement levels was also evaluated. Six observers (two junior and four senior residents) evaluated the radiographic images. The injuries were classified by each observer as either type A, B or C according to the AO-classification system and the levels of agreement were documented. After 3 months the injuries were again classified with the addition of the clinical findings of each patient and the level of agreement evaluated. The level of agreement was measured using Cohen's kappa-test. The overall inter-observer agreement was rated as fair (0.291) in the first session and moderate (0.403) in the second. Intra-observer values ranged from slight (0.181) to moderate (0.488). The increased level of agreement in the second session was attributed to the value of additional clinical information, the learning curve of the junior residents and the simplicity of the classification.

Adolescent↗