Biomedical subjects

Etienne Mullet

Publications and source records attributed to Etienne Mullet.

32 records · Page 2Linked to original sources

PubMed2003

Judging the pleasantness of contour-rhythm-pitch-timbre musical combinations.

The way people with various degrees of musical training integrate timbre, melodic contour, rhythm, and pitch information in an overall pleasantness judgment for musical excerpts was investigated. The theoretical and methodological framework of the study was the functional theory of cognition. In 2 experiments, participants were asked to attribute an overall pleasantness value to combinations of these factors. In Experiment 1, timbre, contour, rhythm, and overall pitch were manipulated. In Experiment 2, timbre and theme (a pattern of pitch and rhythm) were manipulated. Both experiments showed that in judging the pleasantness of musical combinations, participants apply a simple, additive rule in which the weight attributed to one element does not depend of the value of the other elements. Very few differences in regard to the combination rule were observed between participants with and without musical training. These results are discussed in reference to the controversy over pitch and rhythm interaction.

Adolescent↗

PubMed2002

Misconceptions regarding hepatitis C in the French public.

BACKGROUND: Knowing the facts and displaying the proper attitudes and behaviors are critical in preventing the spread of infectious diseases. Hepatitis C is a common infection, but the public's understanding of it has not been studied. METHODS: A convenience sample of 431 French adults, ages 18 to 81 years, completed a questionnaire designed to assess knowledge of hepatitis C and acquired immune deficiency syndrome. A group of nine medical experts also answered the hepatitis C questions. RESULTS: The lay participants had many uncertainties about hepatitis C, and their beliefs frequently differed from medical understanding about hepatitis C. Their responses were correlated more closely with their own responses to the AIDS questions than with the experts' understanding of hepatitis C. CONCLUSIONS: Information regarding hepatitis C should emphasize the distinctions between hepatitis C and AIDS as well as between hepatitis C and hepatitis B and between seropositivity and infection. People should also be informed that blood donation is safe, that using injected drugs is the main risk factor for hepatitis C, that alcohol aggravates hepatitis C, that hepatitis C can cause cancer, that an effective treatment for hepatitis C exists, and that they are not put at risk by mere causal contact with people ill with hepatitis C.

Acquired Immunodeficiency Syndrome↗

PubMed2002

Aging and intuitive physics.

The present study was aimed at comparing the judgment capacities manifested by young adults, middle-aged adults, and elderly people in an everyday life setting implying the consideration of direct as well as inverse relationships between the cues and the criterion. The chosen situation was borrowed from elementary physics and concerned the relationships between mass, volume and density. In forming their estimations of mass, all elderly people were able to use volume and density information. In addition, most of them were able to combine these pieces of information in a correct, multiplicative way. In forming their estimations of volume, all elderly people were able to use mass and density information but a majority of them used the density information in a direct way. By contrast, most young and middle-aged adults correctly used the density information in an inverse way. The findings strengthen and extend the case made by Chasseigne et al. [Acta Psychologica 97 (1997) 235] as regards the trouble elderly people face in using inverse relationships in a judgment situation. The difficulty elderly people face is not confined to learning settings. It may also be observed in ecological, non-learning environments, where the relationships considered do not entirely depend on the experimenter's choice.

Adult↗

PubMed2002

Age, religious beliefs, and sexual attitudes.

Age effects on sexual attitudes were examined using the Hendrick and Hendrick (1987a) Sexual Attitude Scale. The study was cross-sectional, including people from various age groups, from young adults to older adults. The religious beliefs variable, which covaries substantially both with age and sexual attitudes, was controlled. Three main questions guided the study: (a) Is the four-factor structure (Permissiveness, Instrumentality, Communion, and Sexual Practices) previously identified in a sample of young students able to accurately account for data gathered over a full range of adult ages, (b) are older adults much less permissive and less instrumentalist than young people, and (c) to what extent are believers less permissive and instrumentalist than young people when age is taken into account? Factor analyses showed that at least five correlated factors were needed to account for the data; the fourth factor, Sexual Practices, divided itself into two distinct factors: Pleasure and Responsibility. Older adults and believers were shown to be less permissive than young people and nonbelievers, and this result held regardless of the participants educational level. As regards to instrumentality, however, the pattern of differences was extremely complex.

Adolescent↗

PubMed2002

Learning the relationship between smoking, drinking alcohol and the risk of esophageal cancer.

This study examined the effect of outcome feedback on learning the multiplicative relationship between daily intakes of tobacco and alcohol, and the risk of esophageal cancer. In the first of two experiments, 65 French adults judged the risk of esophageal cancer associated with combinations of five levels of intake of tobacco and five of wine. They made these judgments both before and after learning sessions in which they were shown the actual risk for each vignette. In the second experiment, 35 French adults underwent the same testing and learning, and were re-tested twice 1 month later. The study hypotheses were supported. First, prior to the learning sessions, the participants used a subadditive rule to combine the perceived risk of esophageal cancer from smoking and drinking. Second, they learned after only one training session to change to the multiplicative rule that is consistent with epidemiological data. Third, this learning persisted for 1 month. This methodology may prove useful in correcting people's underestimation of their health risks.

Adult↗

PubMed2002

Do parents and physicians differ in making decisions about acute otitis media?

OBJECTIVES: We wanted to discover how parents differ from physicians in making decisions about how to treat a child who may have acute otitis media (AOM). STUDY DESIGN: We used questionnaires that required participants to judge the probability of AOM or choose treatment for 2 sets of 46 paper scenarios of hypothetical children aged 15 months who might have AOM, and they subsequently rated the importance of individual cues and described their attitudes and opinions related to health care and AOM. POPULATION: Convenience samples of 19 US family physicians, 35 French generalists, 21 French pediatricians, 52 US parents, and 86 French parents were included. OUTCOMES MEASURED: The primary outcomes were the judgment policies-the weights placed on each of the scenario cues when making decisions-that were derived for each individual and each group by multiple linear regression. RESULTS: The mean judged probabilities of AOM were nearly the same for all groups: 50% for the US physicians, 51% for the US parents, 52.5% for the French physicians, and 52% for the French parents. The percentages of cases treated with antibiotics did not differ: 53% for US physicians, 45% for US parents, 53% for French physicians, and 51% for French parents. All groups gave greatest weight to the physical examination cues for decisions about both diagnosis and treatment. The parents paid little attention to the cues that reflected parental concerns. CONCLUSIONS: US and French parents were very similar to physicians in their judgments and treatment choices regarding AOM. They appear to be able to adopt the physician's point of view and to be selective in the use of antibiotics.

Acute Disease↗

PubMed2002

Aging and rule learning: the case of the multiplicative law.

This work examined the effect of age on the ability to learn multiplicative combination rules. Participants learned the multiplicative relationship between daily tobacco intake, daily alcohol intake, and risk of esophageal cancer. The hypothesis was that younger adults would learn to implement a multiplicative combination rule and older adults would not, despite feedback. Among the younger adults, complete rule learning took place. Before receiving feedback, they used an underadditive rule, a result consistent with previous studies. After only a limited amount of feedback, they learned to use a multiplicative rule. Even after receiving feedback, however, the older adults still showed difficulties in using the multiplicative rule. These results strengthen the proposition by Chasseigne, Mullet, and Stewart (1997) that the differences between younger and older adults in function learning are related mainly to flexibility of functioning.

Adolescent↗

PubMed2002

Mathematics of forgiveness.

This study was aimed at determining the integration rule--summation or averaging--underlying the forgiveness schema. The main reason for distinguishing between these structures is that they have very different practical implications regarding the influence of various factors specific to each case on the propensity to forgive. In a summative model, the impact of the different factors and the direction of the effects are constant. For example, the presence of apologies always is a positive element even when these apologies assume a very weak form. By contrast, in an averaging model, the apologies can be a positive or a negative element depending on the current level of propensity to forgive and the form of the apologies. Two experiments were conducted using the functional theory of cognition framework. Experiment 1 applied the missing information test. Experiment 2 applied the credibility of information test. In both experiments, clear evidence favored a summative rule for judging willingness to forgive from circumstantial information such as presence or absence of intent, presence of absence of apologies, and degree of cancellation of consequences.

Adult↗

PubMedDate not supplied

Aging and probabilistic learning in single- and multiple-cue tasks.

The objective of the study was to examine some of the conditions under which elderly people are able to learn probabilistic inverse relationships and when this type of learning is no longer possible. Two kind of tasks were used: (a) two single-cue learning tasks with either direct or inverse relationships (the Single-Cue Probability Learning paradigm), and (b) three two-cue learning tasks, one with two direct relationships, one with a combination of direct and inverse relationships, and one with two inverse relationships (the Multiple-Cue Probability Learning paradigm). Four groups of participants were included in the study: young adults (18- to 25-year-olds), adults (40- to 50-year-olds), elderly people (65- to 74-year-olds), and very elderly people (75- to 90-year-olds). It was shown that (a) older adults are able to reject the direct relationship "default" hypothesis and select the inverse relationship hypothesis when outcome feedback contradicting the default hypothesis is given, and provided that the learning setting be a very simple one, involving only one cue; (b) some older adults are able to select the inverse relationship hypothesis provided that the learning setting be a simple one,involving only two inverse relationship cues; and (c) very few older adults are able to select the inverse relationship hypothesis when the learning setting is a complex one, involving two cues with both direct and inverse relationships with the criterion. These results led to the revision of the "gradual decrease of cognitive flexibility in older adults" hypothesis proposed by Chasseigne, Mullet, and Stewart (Acta Psychologicgrave;a, 103, 229-238, 1997).

Adolescent↗

PubMedDate not supplied

Age and medication acceptance.

Patients' willingness to take a newly prescribed medication is an important, but little studied, part of the medication process. The authors studied the impact of patient age on the perceived importance and interaction of three factors known to influence young people: severity of their medical condition, extent of possible medication side effects, and level of trust in their physician. A convenience sample of 170 French adults aged 18 to 93 rated their likelihood of taking a medication intended to alleviate physical suffering in 27 scenarios in which three levels (low, moderate, and high) of each of the above three factors were combined in an orthogonal factorial design. Among younger participants, high trust in the physician was not considered a sufficient reason for high acceptance of a new medication; it had to be accompanied by low side effects. Among very elderly participants, high trust led to high acceptance almost irrespective of the severity of possible side effects. Among the middle aged, trust and side effects had largely independent effects. To promote patients' acceptance of newly prescribed medications, physicians need to establish trust, but not abuse its power in elderly patients.

Adolescent↗

PubMedDate not supplied

The learning of linear and nonlinear functions in younger and older adults.

The performance of 192 adults in a functional learning task containing four types of cue-criterion relations-direct, inverse, U-shaped, and inverse-U-shaped-was compared. The ability of these adults at extrapolating learning to situations containing more extreme values than the ones in which it took place was also examined. Older participants (65-90-year-olds) were able to learn the nonlinear functions practically as well as younger participants (18-25- and 40-50-year-olds); they were also able to extrapolate well beyond the range of learned responses. When extrapolating, however, they frequently used a more limited range of responses than the younger participants.

Adolescent↗

PubMedDate not supplied

Does choosing a treatment depend on making a diagnosis? US and French physicians' decision making about acute otitis media.

BACKGROUND: The classic sequential processing model of clinical decision making-in which the treatment choice follows and depends on the diagnostic judgment-may in some cases be replaced by a processing model in which the treatment choice depends on an independent assessment of the diagnostic and other cues. The aim of this study was to determine which processing model would better describe physicians' treatment choices in a simulated clinical task. METHODS: Seventy-five US and French primary care physicians were presented twice, in a different order, with the same set of 46 scenarios of 15-month-old children suspected of having acute otitis media (AOM). They rated in one set the probability of AOM and in the other set whether they would treat the child with antibiotics (and how confident they felt in their decision). Linear regression analyses revealed the individuals' 2 judgment policies. Hierarchical discriminant analysis was used to analyze the variance explained in the treatment choice by, 1st, the diagnostic judgment, 2nd, the cues specific to treatment, and 3rd, the cues specific to diagnosis. RESULTS: Even when choosing treatment, the participants placed greatest weight on diagnostic cues, especially the ear findings. Only 28% used the cues that reflected parental issues. For 36%, the diagnostic cues had an effect on the treatment choice independent of the effect (if any) of the diagnostic judgment. CONCLUSION: In deciding how to treat AOM, the majority of the participating US and French primary care physicians followed the classic sequential processing model, but a substantial minority used instead an independent processing model.

Acute Disease↗

PubMedDate not supplied

Why do primary care physicians in the United States and France order prostate-specific antigen tests for asymptomatic patients?

PURPOSE: To understand why many primary care physicians in the United States and France order prostate-specific antigen (PSA) tests routinely for their asymptomatic male patients despite "evidence-based" recommendations. METHODS: Thirty-two U.S. general internists and family practitioners and 33 French generalists judged, for 32 hypothetical male patients seen for routine preventive care, the probability that the patients had asymptomatic prostate cancer and the likelihood that they would order PSA tests. They were also asked about beliefs, attitudes, and knowledge related to prostate cancer. RESULTS: The significant predictors of ordering more PSA tests in the scenarios were physicians' higher ratings of regret if untested patients were found to have advanced cancer, their greater discomfort if they suspected that patients had illnesses but could not know for sure, and their perceptions of official recommendations as favoring routine testing. IMPLICATIONS: Nonrational factors can impede physicians' adoption of "evidence-based" recommendations.

Aged↗

PubMedDate not supplied

Avoidance of anticipated regret: the ordering of prostate-specific antigen tests.

OBJECTIVE: When making decisions, people are known to try to minimize the regret that would be provoked by unwanted consequences of these decisions. The authors explored the strength and determinants of such anticipated regret in a study of physicians' decisions to order prostate-specific antigen (PSA) tests. METHODS: 32 US and 33 French primary care physicians indicated the likelihood they would order a PSA for 32 hypothetical men presenting for routine physical exams. They then indicated how much regret they would feel if they found advanced prostate cancer in 12 other patients for whom they had chosen not to order PSAs several years before. The latter patients differed according to age (55, 65, or 75 years), a prior request or not for PSA testing, and no or some irregularity of the prostate on the earlier rectal exam. RESULTS: ANOVA found that regret was higher when the patient had requested a PSA, the prostate was irregular, and the patient was younger. Shape had less effect when the patient had requested a PSA. US physicians had more regret than the French, patient request had a greater impact on the Americans, and increasing patient age reduced regret more among the French. In a 1-way correlation, the regret score was associated with the likelihood of ordering PSAs for both the French (r = 0.64, P < 0.005) and the Americans (r = 0.42, P< 0.02). In a regression analysis too, the regret score was the most important predictor of the likelihood of ordering a PSA (beta = 0.37, P < 0.0001). CONCLUSIONS: Regret over failing to diagnose aggressive prostate cancer is associated with a policy of ordering PSAs. This regret appears to be culturally sensitive.

Aged↗