Behavior Research Methods

List of Papers (Total 5,359)

GSR amplitude instead of GSR magnitude: Caveat emptor!

Size of GSR made by 300 Ss to 20 repetitions of a visual stimulus is presented as mean magnitude and mean amplitude, illustrating that the amplitude method (averaging only those responses which are greater than zero) is susceptible to distortion resulting from a systematic elimination of Ss who initially make small responses. From trial to trial, the amplitude function comes more ...

Measurement of the body surface physiologic tremor or “microvibration”

Five sensor techniques were evaluated for the measurement of human body surface vibrations: a noncontacting capacitance sensor, seismic (velocity) and relative electrodynamic types, linear-variable-differential transformer sensors, and the miniature accelerometer type. Of these, only the miniature accelerometer proved to be entirely satisfactory. The electrodynamic transducer ...

Recall and anticipation methods in probabilistic associative learning1

Six S-R1 S-R2 modified paired-associates were presented for 60 trials. A 2 by 6 factorial design was employed in which method, recall or anticipation, and the S-R1, S-R2 probability-ratio were varied. The S-R1 S-R2 ratios were: 1.00-0.00, .90-.10, 80-.20, .70-30. .60-.40, and .50-.50. The results indicated that the recall procedure yielded superior performance in early acquisition. ...

Toward a complete analysis of GSR data

A critique of amplitude analyses in GSR conditioning is discussed. It was pointed out that, when amplitudes are properly analyzed with all Ss contributing equally to each repeated measures point, the concern of latency interval, definition of response probability, and distribution of GSR amplitudes are concerns which apply to analyses of magnitude, probability, and latency, as well ...

“Basic Black” in computer interfaces for psychological research

In this paper we present the specifications of a set of interface components able to connect a digital computer to any of a large number of psychological experiments We believe this set to be nearly inclusive of most of the needs of current computer controlled psychological research. The function and special requirements of each of the devices is described and a block diagram ...

Paired comparison scaling of reaction potential in two different experiments on habituation

Thurstone’s method of paired comparisons was employed to obtain scaled values of reaction potential from two completely different experimental situations involving response decrement. The first was one in which the GSR was measured on 10 repeated presentations of a visual stimulus (N= 89). The second involved 80 presentations of ordinary visual scenes; the S looked at each scene as ...

PSARP, a programmable signal and response processor

Experiments on perceptual-motor skills often ask for complex application of standard devices. Combinations of the usual electric or electronic instruments such as signal generators, simple time counters and response recorders cannot always be used to form a sufficiently flexible system for a particular set of experiments. In general, an apparatus specially built for a specific ...

A measure of pronunciability of CVC trigrams

All 2100 CVC trigrams were scaled for pronunciability by measuring pronunciation latency (PLat). The resulting distribution of PLat scores was extremely leptokurtic and positively skewed. Scores ranged from a minimum of .531 sec to a maximum of 1.726 sec. Average PLat was .81 sec. The relationship of PLat to Archer meaningfulness was linear; however, the degree of relationship was ...

A note on luminance control in tachistoscopes

Procedures are described for measuring tachistoscopic luminance levels for brief light flashes and over longer intervals. Stability of luminance levels is discussed for both conditions.

A runway for the fish

A runway and a training procedure arc described. Acquisition and extinction curves for a sample of 12 goldfish trained in spaced trials are plotted in terms of three measures.

Liquid level detector with automatic refill and depletion indicator

An electromechanical device is described that provides the means for measuring the amount of water consumption from a storage device and for an automatic refill system. The instrument uses three sensing electrodes located in the storage bottle to drive a solid-state Darlington circuit, which, in conjunction with two liquid solenoid valves, controls the operation of the system.

A dehypernasality trainer

A dehypernasality trainer that can be used for conditioning speech is described.

A combination stereotaxic drill press and electrode carrier

A method of transforming a vertical rack and pinion-type electrode slide into a miniature drill press is described. Advantages of the instrument are noted and several applications suggested. Specifications are included for the aluminum electrode mold for cat cortical electrode casts.

A method of producing a three-dimensional cathode ray tube display

A method of producing a true three-dimensional cathode ray tube display has been developed. It has been used to plot three-dimensional vectorcardiograms, bar graphs, and would probably be useful to research in visual perception.

A simple tachistoscope for student labs

An inexpensive tachistoscope for student labs is described that utilizes a camera shutter to control exposure duration and a potentiometer to vary light intensity. Stimuli can be drawn or typed on 3 x 5 index cards.

Two apparatus assemblies for the study of real movement

Two forms of apparatus are described for the study of real movement. The first is characterized as a hydraulic system and is used where the S’s rate of movement threshold is to be deter-mined. The basis of the apparatus is a hydraulic cylinder with a piston rod carrying a crosspiece with a visual stimulus attached. The piston-crosspiece assembly is raised,by charging the apparatus ...

A simple method of producing discrete subcortical lesions using radio-frequency currents

The described procedures represent an evaluation of the use of radio frequency currents in the production of discrete subcortical brain lesions. The methods described and the electrodes used indicated that RF lesion size was closely and linearly related to a simple V dc index and that the resultant lesions were equally distributed around the position of the lesion electrode with ...

Apparatus for auditory stimulus sorting

An apparatus that enables Ss to sort and rank auditory stimuli is described. It consists of an array of movable pushbuttons that may be connected to various stimulus generators.

A measure of interpersonal dominance

Adolescent males, both delinquent and nondeliquent, were used in the development of a task in which two Ss first make separate decisions, then a joint decision regarding a number of paired photos of girls' faces. The task was developed in order to facilitate and encourage controlled experimentation in the study of interpersonal dominance.

A computer-controlled system for training and testing primates

The hardware and software for a computer-controlled training and testing system for primates are described. The computer (DDP-116 in the Computer-Controlled Psychology Laboratory at Carnegie-Mellon University) controls all stimulus presentation, reinforcement, and records data in a form ready for analysis on a larger computer.

A computer-compatible technique for recording binary events in real time

A technique is described for recording binary stimulus and response events on computer-compatible media mich as punched-paper tape and incremental magnetic tape. A specific implementation of the technique is presented along with a consideration of programming a computer to recover the recorded data. Various extensions and limitations of the technique are also included.

Performance of rats on a discrimination operant alley task discriminated

An automated discriminated operant alley apparatus is described. Data from four rat strains indicate that the light-dark choice is learned by both pigmented and albino rats. The task requires a minimum of experimenter time and allows initial acquisition to be recorded without the interference of a shaping procedure.

Bar orientation in operant escape training

In operant escape training a rat is usually required to deflect a bar in a downward direction to terminate shock for a short interval of time. In the study described here, eight rats were conditioned with the bar mechanism modified to require a sideways deflection. The acquisition of escape responding with the bar in the modified position was inferior to the responding typically ...

Measurement of electroconvulsive shock Intensity

This paper discusses the error introduced in administering ECS by calibrating intensity on the S’s dc rather than ac resistance. Since the ac resistance of rats and mice can be lower than their corresponding dc resistance by a factor of 50, calibrating on dc resistance can introduce appreciable error depending on the current regulation of the ECS device. Examples are included to ...