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PubMed1990

The birth of the Society of Multivariate Experimental Psychology.

This paper describes the inception of a scientific movement (the Society of Multivariate Experimental Psychology); the individuals who begot it; the two journals and numerous scientific articles which resulted; its effects in stimulating new areas of teaching and of theoretical development; and its international reception as well as its successes and failures in stimulating the creation of satellite societies on the same pattern.

History, 20th Century↗
PubMed2005

From single-channel recordings to brain-mapping devices: the impact of electroencephalography on experimental psychology.

Since its discovery in 1920, the electroencephalogram (EEG) has become a widely used tool in experimental psychology. Although originally the merits of the method were seen first of all in an improvement of medical diagnostics it was soon understood by psychologists that EEG can also be used to study psychic processes in healthy participants. This article summarizes important events in the history of EEG research that laid the ground for this development, as fast Fourier transformation to analyze the spontaneous activity and signal averaging to improve the signal-to-noise ratio. The article shows how general technological developments were the prerequisite for these methodological improvements in EEG research and how they inspired new research questions. Key discoveries that proved unequivocally that psychic processes do become manifest in EEG signals are briefly reviewed, and the emerging paradigm of cognitive psychophysiology, which is closely linked to the development of EEG research, is described.

Electroencephalography↗
PubMed2005

Setting occupational exposure limits in humans: contributions from the field of experimental psychology.

Psychophysical methods from the field of experimental psychology are evaluated for their utility in the derivation of occupational exposure limits (OELs) for volatile chemicals based on acute sensory irritation in humans. The lateralization threshold method, which involves the localization of trigeminal vapor to the stimulated nostril, is evaluated for its underlying assumptions, reliability and validity. Whole body exposures, on the other hand, which involve the controlled, ambient exposure of human subjects to the irritant at one or a series of concentrations for an extended period are also discussed. It is concluded that the single-organ psychophysical method is largely resistant to response bias is practical and economical. However, its reliability and validity need further assessment. Whole body exposures, while having enhanced ecological validity, are more prone to demand characteristics, response bias, and subject beliefs than the traditional psychophysical procedures. An approach that involves the exposure of only the most sensitive organs such as the eyes and nose, via a mask or facebox, could facilitate the administration and alternation of odorant/irritant stimuli over a wide range of concentrations while enhancing ecological validity.

Air Pollutants, Occupational↗
PubMed2001

STEP--a System for Teaching Experimental Psychology using E-Prime.

Students in psychology need to learn to design and analyze their own experiments. However, software that allows students to build experiments on their own has been limited in a variety of ways. The shipping of the first full release of the E-Prime system later this year will open up a new opportunity for addressing this problem. Because E-Prime promises to become the standard for building experiments in psychology, it is now possible to construct a Web-based resource that uses E-Prime as the delivery engine for a wide variety of instructional materials. This new system, funded by the National Science Foundation, is called STEP (System for the Teaching of Experimental Psychology). The goal of the STEP Project is to provide instructional materials that will facilitate the use of E-Prime in various learning contexts. We are now compiling a large set of classic experiments implemented in E-Prime and available over the Internet from http://step.psy.cmu.edu. The Web site also distributes instructional materials for building courses in experimental psychology based on E-Prime.

Humans↗
PubMed1999

The altered rationale for the choice of a standard animal in experimental psychology: Henry H. Donaldson, Adolf Meyer, and "the" albino rat.

The mid 20th-century dominance of albino rats in nonhuman experimental psychology research often presumed that the animal embodied fundamental psychological processes that could generalize to a wide range of vertebrates. The author describes the conceptual basis for the original choice of white rats by the 2 individuals most responsible for establishing rats as a prominent animal model in the life sciences at the turn of the century: Henry H. Donaldson and Adolf Meyer. The author stresses the comparative rationale that justified their choice and argues that they sought generality through attention to diversity and species differences. Their approach contrasts sharply with the later view of the rat as a generic animal model that could represent similarities shared by all vertebrates. It is suggested that the change resulted from an emphasis on standardization produced by the growing industrialization of the life sciences in America.

Animals↗
PubMed2005

[Clinical and experimental-psychological features of depression in late onset schizophrenia patients with Kandinski Klerambo's syndrome].

Clinical-psychopathological and experimental-psychological investigation of depressed late onset schizophrenia patients with Kandinski Klerambo's syndrome made possible to determine the most frequent subgroups of depressive states: a) apatho-adynamic depression, b) depression with cenestopathy and hypochondriac symptoms, c) depression with depersonalization and de-realization, d) melancholic depression. The experimental psychological examination with method of fixed set by D.N Uznadze revealed relatively intact personality features that could be explained by different aging factors. Analyzing correlation between fixed set characteristics among the depressed schizophrenia patients with passivity phenomena we could assume, that basically the fixed set among those patients is stable, persistent, static, steady, constant, generalized and in some cases, in the presence of dis-automation of sensory integrity, it may be local.

Adult↗
PubMed2004

A biographical note on Max Friedrich (1856-1887), Wundt's first PhD student in experimental psychology.

This article unveils some previously unknown facts about the short life of Max Friedrich (1856-1887), the author in 1881 of the first PhD dissertation on experimental psychology, written under the supervision of Wilhelm Wundt: "On the Duration of Apperception for Simple and Complex Visual Stimuli." The article describes Friedrich's family background and life, professional career as a teacher, and works in psychology and mathematics.

Germany↗
PubMed1977

A plea for consideration of ecological validity in the experimental psychology of mental retardation: a guest editorial.

The point was raised that, despite considerable experimental effort, laboratory research concerning learning, memory, and cognition, more generally, has not produced a very remarkable increase in our understanding of retarded behavior. Our principal contention in this paper is that the experimental psychology of mental retardation, while basically seeking causal relations between theoretical constructs and retarded behavior, is suffering from some metatheoretical and methodological shortcomings. These include, basically, a prevalent failure to consider the ecological aspects of the phenomenon of mental retardation. Implications of ecological validity are important with respect to the basis upon which subjects are selected for experimentation, the rationale underlying manipulation of independent variables, the choice of dependent variables, and the definition of the boundaries that limit generalizations. Some suggestions were offered for the purpose of guiding experimental research toward more meaningful and socially relevant goals.

Humans↗