Tactile apparent movement: The effects of interstimulus onset interval and stimulus duration

The effects of variations in stimulus duration and interstimulus onset interval on ratings of tactile apparent movement were determined for seven Ss with stimulators of very small diameter. Judgments of successiveness and simultaneity were also obtained. It was found that apparent movement increased as a power function of increases in stimulus duration. The function relating tactile apparent movement and stimulus duration was shown to be similar to that obtained by Kolers (1964) for visual apparent movement, lnterstimulus onset interval also had a marked effect on apparent movement, and the optimal interval was influenced by stimulus duration in a manner similar to that reported by Sherrick and Rogers (1966).     

A fixed interval schedule in which the interval is initiated by a response

The fixed interval schedule described requires the animal to initiate every time interval by making a response on a bar other than the one on which it is reinforced. This response, R_A, demarcates the postreinforcement pause (S^R-R_A interval) from the fixed interval pause (R_A-R_B interval) so that these pauses may be measured separately. Twelve rats and three monkeys, working in two-bar Skinner boxes, were trained and stabilized on this schedule. The resulting performances, presented for individual animals, are analyzed in terms of (1) the relative frequencies with which the animal waits various lengths of time between consecutive responses, (2) the relative frequencies with which various rates of responding appear, (3) the change in response rate throughout the fixed interval, (4) the average length of the postreinforcement pause, (5) the relative frequencies with which the animal waits different lengths of time between the R_A and the first R_B, and (6) the average inter-response time as a function of the rank order in the fixed interval of the inter-response time. The joint interpretation of the several measures taken leads to the following conclusions: 1. The probability of an R_B increases throughout the fixed interval. 2. The increase is discontinuous at the first R_B, at which point the probability increases sharply. 3. The frequency distributions of R_A-R_B pauses exhibit three discrete types of behavior with no intermediate cases. 4. The (main) mode of R_A-R_B interval length usually occurs just below the fixed interval requirement.     

Self-reported arousal Factorial complexity as a function of the subject's arousal level

Abstract.— The factorial stability of a previously constructed six-factor check-list for self-reported arousal was studied in three different situations which were conceived of as inducing different levels of arousal, viz. in the evening before going to bed, at a lecture, and at an examination. The analyses showed that the six factors obtained in the Lecture group were reduced to five in the Examination group and to four in the Evening group. This reduction was due to a combination of the items from pairs of the original factors into one factor. Significant differences between the three groups were obtained in all factors but one. The results were regarded as support for the usefulness of the six-factor instrument, the implication being that one or two of the factors in some situations might be redundant. The relevance of the results for a previously proposed model of arousal was discussed.     

Personality and multidimensional arousal: A study of two dimensions of extraversion

Recent research has provided conflicting accounts of the effects of extraversion on arousal, and of the role of arousal in effects of extraversion and impulsivity of performance. Data are presented from a study of the inter-relationships of various dimensions of extraversion, self-report arousal and physiological arousal. Subjects also performed a verbal intelligence test. A composite measure of skin conductance and heart rate was significantly positively correlated with a self-report general arousal measure. 16PF Extraversion, and two primary extraversion factors, F and H, were significantly negatively correlated with physiological arousal, and/or one dimension of self-report arousal. The relationship between extraversion and arousal was not affected by time of day. An interactive effect of time of day, F and general arousal on performance was found, but there were no significant effects of H on performance. Relationships between extraversion and arousal may be epiphenomenal to interactive effects of extraversion or impulsivity and arousal on performance.     

Temporal factors influencing the pigeon's successive matching-to-sample performance: sample duration, intertrial interval, and retention interval

A successive matching-to-sample procedure that entails the sequential presentation of sample and test stimuli and the monitoring of response rates in a go/no-go discrimination of matching and nonmatching stimuli was studied as an alternative to the familiar delayed-matching paradigm of animal short-term memory. Three within-subject experiments studied the effects of sample duration (1 to 12 seconds), intertrial interval (5 to 50 seconds), and retention interval (1 to 50 seconds) on the pigeon's successive-matching performance. The results revealed that retention was (a) an increasing function of sample duration and intertrial interval, and (b) a decreasing function of retention interval. These results were in accord with those of more traditional short-term memory paradigms, and reveal the suitability of the successive-matching procedure for studying memory processes.     

Temporal cognition and the phenomenology of time: a multiplicative function for apparent duration

The literature on time perception is discussed. This is done with reference both to the "cognitive-timer" model for time estimation and to the subjective experience of apparent duration. Three assumptions underlying the model are scrutinized. I stress the strong interplay among attention, arousal, and time perception, which is at the base of the cognitive-timer model. It is suggested that a multiplicative function of two key components (the number of subjective time units and their size) should predict apparent duration. Implications for other cognitive domains are drawn, and in particular an analogy is suggested between apparent duration and apparent movement.     

Causal attributions and male sexual arousal: the impact of attributions for a bogus erectile difficulty on sexual arousal, cognitions, and affect

After viewing 2 sexually explicit films, 52 sexually functional participants were given bogus feedback indicating a low erectile response. The men were given either an external, fluctuating attribution (i.e., poor films) or an internal, stable attribution (i.e., problematic thoughts about sex) for the low arousal. As hypothesized, participants in the external, fluctuating group evidenced greater erectile response and subjective arousal during a 3rd film than did participants given the internal, stable attribution. This may indicate that after an occasion of erectile difficulty, the cause to which the difficulty is attributed plays an important role in future sexual functioning.     

Extraversion and sleep: A psychophysiological study of the arousal hypothesis

In order to examine Eysenck's (1967) hypothesis concerning the relationship between extraversion and arousal, autonomic measures were taken from introverts and extraverts immediately before sleep and during 6 hr of sleep. Introverts and extraverts did not differ in heart rate (HR) or skin-potential response rate (SPR) during the pre-sleep period. A variety of sleep-related measures of arousal provided no strong support for the hypothesis that introverts are more aroused than extraverts. The only consistent autonomic difference between introverts and extraverts during sleep was a tendency for introverts to have higher SPRs in the second 3 hr of the night. The results are discussed in terms of the level of environmental stimulation present in the experimental conditions, and suggestions are made for future sleep studies of the relationship between extraversion and arousal.     

Stroboscope motion: Effects of duration and interval1

The quality of stroboscope motion induced by the successive presentation of two illuminated squares obeys two rules. For all stimulus durations shorter than 100 msec, optimal motion occurs when the stimulus onsets differ by about 120 msec. For stimulus durations longer than 100 msec, optimal motion occurs when the second stimulus begins at the termination of the first stimulus. The two rules relating quality of motion to duration suggest a single principle, namely, that the quality depends only on the interval between the visual responses to the two stimuli. The interresponse interval at which motion is optimal is independent of stimulus duration.     

Coffee cues elevate arousal and reduce level of construal

Coffee and tea are two beverages commonly-consumed around the world. Therefore, there is much research regarding their physiological effects. However, less is known about their psychological meanings. Derived from a predicted lay association between coffee and arousal, we posit that exposure to coffee-related cues should increase arousal, even in the absence of actual ingestion, relative to exposure to tea-related cues. We further suggest that higher arousal levels should facilitate a concrete level of mental construal as conceptualized by Construal Level Theory. In four experiments, we find that coffee cues prompted participants to see temporal distances as shorter and to think in more concrete, precise terms. Both subjective and physiological arousal explain the effects. We situate our work in the literature that connects food and beverage to cognition or decision-making. We also discuss the applied relevance of our results as coffee and tea are among the most prevalent beverages globally.     

Attraction to a dissimilar stranger as a function of level of effectance arousal

An experiment was carried out to demonstrate that the relationship between attitudes of a stranger and attraction to that stranger can be mediated by effectance arousal and the consequent information search to reduce the arousal. The argument posited was that individuals under high effectance arousal produced by a confusing and ambiguous film would be attracted to dissimilar others as a source of information and uncertainty reduction. Results indicated that high levels of arousal produced greater attraction to a dissimilar stranger than to a similar stranger. This finding was reversed when an explanation was provided along with the confusing film, lending support to the uncertainty reduction position.