Duration differences between rare and common words and their implications for the interpretation of word frequency effects

The spoken durations of rare and common words were compared in three experiments. Depending upon the task and the amount of practice, rare words (with frequencies less than 3 per million) were spoken as much as 24% slower than common words (with frequencies greater than 100 per million), when the words were equated for number of letters. This difference was observed even when the memory and lexical access demands of the task were minimized, and it can be explained by differences in the phonetic constituents of the two classes of words. The existence of these phonetic differences has been previously reported by Landauer and Streeter (1973) and by Zipf (1935). These findings argue against the view that all effects on the processing of accurately perceived words that are correlated with frequency may be unambiguously ascribed to operations that involve secondary memory (although this may be true of frequency effects per se). One recent experiment (Watkins, 1.977) is examined in light of these findings.     

Accessing lexical memory: The transfer of word repetition effects across task and modality

Reading by literate adults is generally assumed to represent skill acquired years earlier. However, the present experiments show that aspects of that skill can be readily modified. In two experiments, pronunciation of visually presented common words speeded later recognition of those words. This facilitation of recognition occurred although subjects did not expect word repetition and the task was changed from pronunciation to recognition. In contrast, naming pictures did not facilitate later recognition of visually presented picture names. The occurrence of facilitation when the task was changed and the lack of facilitation when stimulus format was changed suggest that facilitation occurs in the processes of encoding and accessing memory, processes that may change little across tasks but may change substantially with stimulus format changes. This facilitation of recognition occurs automatically without mediation by subjects’ expectations. A third experiment indicates that this facilitation of recognition shows little relation to episodic memory.     

Extraversion and the orienting reaction habituation rate to visual stimuli

Eysenck's (1967) proposal that introversion is characterized by increased levels of activity in the cortico-reticular loop was treated in a series of experiments which compared high, middle, and low extraversion groups on the basis of OR habituation rate to visual stimulation. Generally, introverts were observed to have longer OR habituation rates to chromatic and word stimulation than extraverts as evidenced by cardiac, electrodermal, and vasomotor indices of habituation rate, a result which endorses Eysenck's hypothesis. Results are also discussed from the standpoint of individual differences in autonomic response.     

Evaluation of two test-anxiety reduction treatments in a secondary prevention program

The study evaluated the effectiveness of both a new anxiety management training program and a cognitive modification procedure as part of a secondary prevention effort to identify and treat test anxiety early in the academic career of college students. Subjects were 40 college freshmen who had been identified as high test-anxious in an initial mail-out survey of the Test Anxiety scale. Subjects were randomly assigned to three experimental conditions: anxiety management training, a cognitive modification procedure, and a no-treatment control group. Results indicated that both the cognitive modification and anxiety management training treatments were effective in reducing test anxiety on a posttreatment administration of the Test Anxiety scale. Especially interesting, a significant difference in academic performance emerged between treatment and control groups three semesters after treatment, underscoring the preventive value of the program.     

The interaction of visual and motor memory for graphic forms following tracing

Memory for series of abstract graphic forms was tested using a recognition/ reconstruction procedure in two experiments with 8-9-year-old children. The children either looked at the forms and traced around each of them in turn (VT condition), or looked at the forms for an equivalent length of time and pointed to them (V condition). Memory for the forms, but not their order was improved by tracing. The mechanism responsible for this was investigated by comparing the effects of motor and visual interference interpolated between stimulus presentation and recognition testing. Motor interference was most disruptive in the VT condition while visual interference tended to be most disruptive in the V condition. These results support the proposal that tracing produces a distinct motor memory trace and that this additional source of information aids visual recognition.     

A FORTRAN program for lag sequential analysis of contingency and cyclicity in behavioral interaction data

One method for identifying contingency relationships in a sequence of observed behaviors studies occurrences of matching behaviors at successive event or time steps from a criterion event. This paper briefly summarizes the method and presents a computer program for generating lag conditional probabilities and associated measures for assessing statistical significance.     

Film-facilitated arousal and prosocial behavior

The present investigation sought to test the applicability of the excitation transfer model (P. Tannenbaum & D. Zillmann. In L. Berkowitz, Ed., Advances in experimental social psychology, Vol. 8, New York: Academic Press 1975) to prosocial behavior. This model predicts that for individuals predisposed to act prosocially, arousal transferred from an unrelated source will facilitate such behavior. Two studies were conducted in which male college students, treated in either a positive or neutral manner and shown an arousing erotic or nonarousing control film, ostensibly rewarded and punished a confederate for performance on a memory task. Contrary to predictions, the first experiment found the arousing film increased reward regardless of treatment. In the second experiment, where the neutral treatment was given a more negative tone, the predicted interaction was found. Specifically, subjects treated in a positive manner and shown an arousing film were significantly more rewarding than were similarly treated subjects shown the nonarousing film. While type of film had no effect on neutral subjects' reward behavior, the arousing film did increase their punitive behavior. These results, coupled with physiological and self-report data, strongly support the excitation transfer model.     

The self-attention-induced feedback loop and social facilitation

It has been proposed that self-directed attention leads to the engagement of a cybernetic feedback loop, by which discrepancies between present behavior and a standard of comparison are reduced. This analysis is applied to performance facilitation effects, which are more typically explained in terms of drive theories. Though these two approaches to motivation make similar behavioral predictions in this context, they assume different mediating states. Support is noted for the assumptions that mirror presence and audience presence induce self-focus, and that they lead to comparison with salient behavioral standards. Support for the assumption that these manipulations increase arousal is also reviewed, and is challenged on methodological grounds. The attentional analysis is used to derive predictions regarding changes in physiological state over the course of a typical social facilitation procedure. An experiment is reported which confirmed these predictions. Discussion centers on how to interpret physiological changes in terms that are compatible with control theory, how to account for social impairment phenomena in terms of the present model, and the conceptual relationship between mirror presence and audience presence as experimental manipulations.