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151.
Eastern and Western interpretations of contextual control of phasic conditional responses (transswitching) are contrasted. The Eastern (Asratyan, 1965) approach emphasizes the role of the tonic conditional stimulus and the (hypothetical) tonic response it evokes. The Western (Lachnit, 1986) approach emphasizes the role of compound conditional stimuli. Although Lachnit showed that transswitching-like results can be obtained without a tonic stimulus, attempts to simulate transswitching experiments using a computer model of the Rescorla-Wagner theory (Kimmel and Lachnit, 1988) have shown that predictions from the theory approximate empirical results in human classical conditioning only when the tonic stimulus is given far greater weight than the phasic stimulus. In other words, only when the Rescorla-Wagner theory is made more like Asratyan’s theory, can the compound conditional stimulus approach account for real empirical transswitching data. 相似文献
152.
To date little evidence is available as to how emotional facial expression is decoded, specifically whether a bottom-up (data-driven) or a top-down (schema-driven) approach is more appropriate in explaining the decoding of emotions from facial expression. A study is reported (conducted with N = 20 subjects each in Germany and Italy), in which decoders judged emotions from photographs of facial expressions. Stimuli represented a selection of photographs depicting both single muscular movements (action units) in an otherwise neutral face, and combinations of such action units. Results indicate that the meaning of action units changes often with context; only a few single action units transmit specific emotional meaning, which they retain when presented in context. The results are replicated to a large degree across decoder samples in both nations, implying fundamental mechanisms of emotion decoding. 相似文献
153.
Harald Merckelbach Arnoud Arntz Peter de Jong Erik Schouten 《Behaviour research and therapy》1993,31(8):775-779
In order to test the hypothesis that low levels of endogenous opioids (endorphins) predispose to strong conditioning effects, female Ss (N = 36) were assigned to a placebo group, a low-dose naltrexone group, or a high-dose naltrexone group and then underwent a classical conditioning procedure. This procedure consisted of an acquisition phase in which all Ss received 5 pairings of a CS+ (neutral picture) and a UCS (100 dB white noise). The CS− (neutral picture) was never followed by a UCS. During extinction, Ss received 4 unreinforced presentations of CS+ and CS−. Throughout the experiment, skin conductance responses (SCRs) to the CSs and UCSs were recorded. Acquisition was successful in that CS+ slides elicited stronger SCRs than CS − slides. However, during acquisition, there was no interaction between drug and differential response (CS+ vs CS−). During extinction, there was no overall remaining effect of conditioning. Again, no evidence was found to suggest that (remaining) effects of conditioning were stronger in the naltrexone treated Ss than in the placebo S's. If anything, the opposite seemed to be true with especially high-dose naltrexone Ss showing relatively weak conditioning effects. 相似文献
154.
Helmut Kleinschmidt Harald Lachnit 《Integrative psychological & behavioral science》1993,28(2):158-162
The experiment reviewed here was an attempt to show that two differential Pavlovian conditioning designs, namely positive and negative patterning, can best be understood as rule learning. First, it is shown that positive patterning is equivalent to the logical rule of conjunction (AND) and that negative patterning is equivalent to the logical rule of exclusive disjunction (XOR). It is assumed that in order to learn both kinds of discrimination subjects learn to use the according rule. If this is the case, the observed differentiation should be independent of the number of reinforcements for each individual stimulus. Second, subjects should be able to transfer the rule to new stimuli. Forty human subjects were randomly divided into four groups (N=10 each). Two factors were manipulated independently between subjects: (1) positive vs negative patterning, and (2) 2 vs 4 pairs of trained stimuli. Second interval skin conductance responses were measured. During initial acquisition positive as well as negative patterning occurred independently of number of pairs of trained stimuli (with total amount of training kept constant). Furthermore, AND as well as XOR could be transfered to new stimuli. 相似文献
155.
The experiment reviewed here was an attempt to examine whether or not magnitudes of first and second interval skin conductance
responses (FIR, SIR) to different conditioned stimuli (CS), each predicting another unconditioned stimulus (US), mirror the
aversiveness of the predicted USs. Twenty human subjects received a differential Pavlovian conditioning training with five
CSs, each one paired eight times with a specific US. Magnitudes of FIR and SIR elicited by CSs increased with increasing aversiveness
of the USs predicted. It is concluded therefore that the SIR is not a mere indicator of a cognitive expectancy process but
is also affected by emotional aspects. 相似文献
156.
157.
158.
Harald Lachnit Annette Kinder 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》2000,53(3):209-224
Three Pavlovian conditioning experiments with human participants are reported, which investigated whether common or separate stimulus representations are involved in solving nonlinear discrimination tasks in different response systems. In our experiments we made use of a negative transfer effect between positive and negative patterning. Experiment 1 specified the conditions under which such a negative transfer effect occurs in human eyelid conditioning. Experiments 2 and 3 investigated whether a similar effect also occurs if two response systems- the eyelid and the skin conductance response system- are trained with trials of both types being randomly interleaved. The presence or absence of a negative transfer effect indicates whether or not the stimulus representations involved in the two conditioning processes overlap. The findings are discussed within the framework of a neuropsychological model of hippocampal function. The results suggest that the representations are distinct and thus support the idea of acquired equivalence and distinctiveness of stimulus representations. 相似文献
159.
Papousek I Ruggeri K Macher D Paechter M Heene M Weiss EM Schulter G Freudenthaler HH 《Journal of personality assessment》2012,94(1):82-91
The Statistics Anxiety Rating Scale (STARS) was adapted into German to examine its psychometric properties (n = 400). Two validation studies (n = 66, n = 96) were conducted to examine its criterion-related validity. The psychometric properties of the questionnaire were very similar to those previously reported for the original English version in various countries and other language versions. Confirmatory factor analysis indicated 2 second-order factors: One was more closely related to anxiety and the other was more closely related to negative attitudes toward statistics. Predictive validity of the STARS was shown both in an experimental exam-like situation in the laboratory and during a real examination situation. Taken together, the findings indicate that statistics anxiety as assessed by the STARS is a useful construct that is more than just an expression of a more general disposition to anxiety. 相似文献
160.
Visual emotionally charged stimuli have been shown to elicit early electrophysiological responses (e.g.,
[Ihssen et al., 2007],
[Schupp et al., 2003] and [Stolarova et al., 2006]). We presented isolated words to listeners, and observed, using generalized additive modeling, oscillations in the upper part of the delta range, the theta range (Bastiaansen & Hagoort, 2003), and the lower part of the alpha range related to degree of (rated) danger and usefulness (Wurm, 2007) starting around 150 ms and continuing to 350 ms post stimulus onset. A negative deflection in the oscillations tied to danger around 250-300 ms fits well with a similar negativity observed in the same time interval for visual emotion processing. Frequency and competitor effects emerged or reached maximal amplitude later, around or following the uniqueness point. The early effect of danger, long before the words’ uniqueness points, is interpreted as evidence for the dual pathway theory of LeDoux (1996). 相似文献