Unpleasant Changes Research Articles

Quality of life change and individual differences in stimulus screening in relation to incidence of illness.

A considerable amount of evidence indicates that a high rate of life changes—a source of continued and unavoidable arousal—is detrimental to health and psychological well-being. The present study hypothesized that sustained high-arousal states are unpreferred and that the persistence of unpreferred emotional states is harmful. Using a conceptual framework for a comprehensive description of emotional states and the differential preferences for these, it is possible to make more precise predictions on the illness consequences of emotionally unpreferred life changes. Particular hypotheses which received support were that more arousing life changes are more conducive to illness; that among the more arousing life changes, unpleasant changes are associated with more illness than pleasant ones; that unpleasant life changes are more detrimental to health when combined with dominance-inducing life changes; and that arousing life changes are particularly harmful to more arousable (non-screening) individuals.

An approach to prosthodontics through speech science: Part V. Speech science research of prosthodontic significance

Speaking entails the use of a set of structures and muscles that shape and reshape the oral cavity from second to second. The innervation of these muscles is such that habitual and rapid formation of sounds is provided. The dentist who is constructing dentures for a patient has choices which permit greater or less interference with the habits of speech. He should make his decisions with full awareness that the habit strength of physiologic movements in speaking is strong, that any change in the sound of one's own voice is likely to be an unpleasant change, that the condition of the patient's hearing may well preclude his forming new habits of articulation of speech sounds. Since the quality of voice and speech is inherent and serves as a major area of identification of the individual, the prosthodontic implications of maintaining this identity will be considered in the following articles of this series.

How to make Colourless Specimens of Plants to be preserved in Alcohol

MANY plants assume a brown colour when placed in alcohol for preservation. The colouring-matter is partly soluble in the alcohol, partly not, and is the product of the oxidation of colourless substances of the cell-sap. This unpleasant change may be prevented in a very easy manner by using acid alcohol. To 100 parts of common strong alcohol add 2 parts of the ordinary concentrated solution of hydrochloric acid of the shops. Parts of plants brought into this liquid while yet living will become absolutely colourless, or nearly so, after the alcohol has been sufficiently often renewed. Such parts as already had a brown colour before, being brought into the mixture, usually retain this character.