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Biomedical subjects

W Kessen

Publications and source records attributed to W Kessen.

At least 19 recordsLinked to original sources
PubMed1991

Improving the use of early follow-up care after emergency department visits. A randomized trial.

OBJECTIVE: To test the hypothesis that the appropriateness of parents' use of early follow-up care after emergency department (ED) visits can be improved by postvisit support from a nurse practitioner. DESIGN: Randomized controlled trial, single blinded. SETTING: Urban university hospital ED linked to hospital's primary care center. PARTICIPANTS: Parents of 190 children younger than 8 years who sought care in the ED for acute illnesses and who were treated as outpatients with primary care center follow-up at the discretion of ED clinicians. INTERVENTION: Parents in the experimental group were called by a nurse practitioner who offered both individualized guidance regarding follow-up and access to a nurse practitioner for further help as needed. The control group received "usual" follow-up advice during ED visits. MEASUREMENTS/MAIN RESULTS: In the week after the ED visits, parents in the experimental group, compared with parents in the control group, were more compliant with instructions regarding follow-up (79% vs 61%), less apt to miss appointments (15% vs 31%), and less apt to "shop" elsewhere for care (2% vs 9%). Appropriateness of follow-up was assessed in "blinded" fashion using preestablished guidelines. Inappropriate use of follow-up care was significantly reduced among experimental group subjects (10% vs 20%). CONCLUSION: The nurse practitioner's intervention improved parents' use of follow-up care in our sample. Overall care for episodic ED users might be improved by similar interventions.

Aftercare↗
PubMed1981

Admission decisions and performance during medical school.

This study compared a group of 24 applicants who were interviewed and accepted at the Yale University School of Medicine but went to other medical schools (AYEs) with a group of 27 applicants who attended the same schools but had been rejected at Yale following an interview and committee deliberation (NAYs). Measures of performance during medical school included scores on Parts I and II of the examinations of the National Board of Medical Examiners and evaluations from the dean's office at each student's medical school. No relationship was found between admission decisions and performance during medical school when AYEs and NAYs attending the same medical schools were compared.

Connecticut↗
PubMed1980

Signs of risk of obesity in newborn babies.

A study if discussed from which it is postulated that newborn babies who are thin (according to skinfold measurement) and who have normal-weight parents are 'buffered against obesity', while newborn babies who have moderate or thick skinfolds and who have overweight parents are at high risk of becoming obese.

Adult↗
PubMed1976

Human newborns differentiate differing concentrations of sucrose and glucose.

One- to three-day-old infants who sucked to obtain flavored water revealed a precisely graded tongue movement which was sensitive to the gustatory properties of the flavored water. Stronger concentrations of sucrose and glucose elicited movements of greater amplitude than did weaker concentrations; sucrose was effective at lower concentrations than was glucose. These results correspond well with the relative sweetness adults attribute to these solutions in psychophysical studies.

Chemoreceptor Cells↗
PubMed1976

The categories of hue in infancy.

Infant looking time was monitored during habituation to the repeated presentation of a wavelength stimulus selected from one basic adult hue category and after a change in stimulation. Recovery from habituation was greater to a wavelength selected from an adjacent hue category than to a wavelength from the same category even though these two stimuli were equally distant (in nanometers) from the habituation wavelength. Differential responding evidenced infants' categorical perception of hue; that is, infants see the physically continuous spectrum as divided into the hue categories of blue, green, yellow, and red. These results help to resolve the long-standing controversy surrounding the primacy of perception over language in the organization of hue.

Color Perception↗
PubMed1976

Color vision and hue categorization in young human infants.

Two studies examined the organization of color perception in 4-month-old human infants. In Study 1, infants looked at selected spectral stimuli repeatedly until their visual attention waned. The stimuli represented instances of basic adult hue categories - blue, green, yellow, and red. Following habituation, infants were shown a series of wavelengths which were the same as or different from the stimuli first seen. Analyses of infant attention during this dishabituation phase of the study indicated that infants categorize wavelengths by perceptual similarity; that is, they see hues in the spectrum much as adults do. In Study 2, a group of infants who looked at the alteration of two wavelengths from the same hue category habituated as did the group of infants who looked at the repitition of a single wavelength from that category, but a group of infants who looked at two wavelengths from different categories habituated at a slower rate. Data from the two studies suggest a high degree of organization of the color world prior to language acquisition.

Association↗
PubMed1976

Prediction of screening decisions in a medical school admission process.

To study and predict a set of screening decisions in a medical school admission process, a stratified sample (n = 864) was drawn to represent the range of applicants to the Yale University School of Medicine during a single year. A smaller sample from the following year's applicants was drawn in a similar fashion for purposes of cross-validation. Prior to the prediction of screening decisions, a set of independent variables was selected by a factor analytic procedure from credentials in an applicant's admission folder. These folder variables ranged in nature from quantitative measures of academic performance to demographic information and types of extracurricular activity. Two multivariate statistical procedures, Sonquist's Automatic Interaction Detection (AID) and linear discriminant analysis (LDA), were used to predict screening decisions. Measures of academic performance and ability proved to be the most effective predictors of screening decision, as evidenced in the final AID tree and the discriminant function.

Connecticut↗