| 1. |
- Cao, Haozhi, et al.
(author)
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Self-Supervised Video Representation Learning by Video Incoherence Detection
- 2023
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In: IEEE Transactions on Cybernetics. - : Institute of Electrical and Electronics Engineers (IEEE). - 2168-2267 .- 2168-2275.
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Journal article (peer-reviewed)abstract
- This article introduces a novel self-supervised method that leverages incoherence detection for video representation learning. It stems from the observation that the visual system of human beings can easily identify video incoherence based on their comprehensive understanding of videos. Specifically, we construct the incoherent clip by multiple subclips hierarchically sampled from the same raw video with various lengths of incoherence. The network is trained to learn the high-level representation by predicting the location and length of incoherence given the incoherent clip as input. Additionally, we introduce intravideo contrastive learning to maximize the mutual information between incoherent clips from the same raw video. We evaluate our proposed method through extensive experiments on action recognition and video retrieval using various backbone networks. Experiments show that our proposed method achieves remarkable performance across different backbone networks and different datasets compared to previous coherence-based methods.
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| 2. |
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| 3. |
- Dang, Junhua, et al.
(author)
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Action orientation overcomes the ego depletion effect
- 2015
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In: Scandinavian Journal of Psychology. - : Wiley. - 1467-9450 .- 0036-5564. ; 56:2, s. 223-227
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Journal article (peer-reviewed)abstract
- Abstract in UndeterminedIt has been consistently demonstrated that initial exertion of self-control had negative influence on people's performance on subsequent self-control tasks. This phenomenon is referred to as the ego depletion effect. Based on action control theory, the current research investigated whether the ego depletion effect could be moderated by individuals' action versus state orientation. Our results showed that only state-oriented individuals exhibited ego depletion. For individuals with action orientation, however, their performance was not influenced by initial exertion of self-control. The beneficial effect of action orientation against ego depletion in our experiment results from its facilitation for adapting to the depleting task.
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| 4. |
- Dang, Junhua, et al.
(author)
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Further support for the motivational explanation of self-other similarity judgment asymmetry
- 2017
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In: Swiss Journal of Psychology. - : Hogrefe Publishing Group. - 1421-0185 .- 1662-0879. ; 76:4, s. 155-159
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Journal article (peer-reviewed)abstract
- Self-other similarity judgment asymmetry refers to the tendency of people to judge others to be more similar to themselves than they judge themselves to be similar to others. This effect can be explained with both a cognitive model (Tversky, 1977) and a motivational explanation (Codol, 1987). Recent research has provided initial evidence for the core assumption of the motivational explanation and tested a hypothesis that can only be derived from the motivational explanation. The present study aims to provide further evidence for the motivational explanation by testing another hypothesis derived from it that goes beyond the cognitivemodel. Our results show that participants with a strong need for uniqueness tended to exhibit self-other asymmetry, but only with respect to attributes that were difficult to falsify.
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| 5. |
- Dang, Junhua, et al.
(author)
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Individual differences in dopamine level modulate the ego depletion effect
- 2016
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In: International Journal of Psychophysiology. - : Elsevier. - 0167-8760 .- 1872-7697. ; 99, s. 121-124
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Journal article (peer-reviewed)abstract
- Initial exertion of self-control impairs subsequent self-regulatory performance, which is referred to as the ego depletion effect. The current study examined how individual differences in dopamine level, as indexed by eye blink rate (EBR), would moderate ego depletion. An inverted-U-shaped relationship between EBR and subsequent self regulatory performance was found when participants initially engaged in self-control but such relationship was absent in the control condition where there was no initial exertion, suggesting individuals with a medium dopamine level may be protected from the typical ego depletion effect. These findings are consistent with a cognitive explanation which considers ego depletion as a phenomenon similar to switch costs that would be neutralized by factors promoting flexible switching.
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| 6. |
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| 7. |
- Dang, Junhua, et al.
(author)
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The Beauty of the Zero : Replications and Extensions of the Hidden-Zero Effect in Delay Discounting Tasks
- 2021
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In: Social Psychology and Personality Science. - : SAGE Publications. - 1948-5506 .- 1948-5514. ; 12:4, s. 544-549
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Journal article (peer-reviewed)abstract
- Unlike the presentation format in a typical delay discounting task (e.g., Would you prefer [A] US$4.3 today OR [B] US$7.5 in 22 days?), Magen et al. inserted a zero to each alternative (e.g., Would you prefer [A] US$4.3 today and US$0 in 22 days OR [B] US$0 today and US$7.5 in 22 days?) and found this manipulation effectively reduced delay discounting (d= .84), which was referred to as the hidden-zero effect. Study 1 was a direct replication of this effect. In Study 2, we tested whether the explicit-zero format could buffer against the detrimental effect of exposure to sexy cues on delay discounting. In Study 3, we explored the mechanism underlying the hidden-zero effect. Taken together, the hidden-zero effect was consistently found across all studies (N= 2,440) and our internal meta-analysis yielded a medium to large effect size (d= .52).
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| 8. |
- Dang, Junhua, et al.
(author)
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The ego could be depleted, providing initial exertion is depleting : A preregistered experiment of the ego depletion effect
- 2017
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In: Social Psychology. - : Hogrefe Publishing Group. - 1864-9335 .- 2151-2590. ; 48:4, s. 242-245
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Journal article (peer-reviewed)abstract
- The ego depletion effect has been examined by over 300 independent studies during the past two decades. Despite its pervasive influence, recently this effect has been severely challenged and asserted to be a fake. Based on an up-to-date meta-analysis that examined the effectiveness of each frequently used depleting task, we preregistered the current experiment with the aim to examine whether there would be an ego depletion effect when the Stroop task is used as the depleting task. The results demonstrated a significant ego depletion effect. The current research highlights the importance of the depleting task’s effectiveness. That is to say, the “ego” could be “depleted,” but only when initial exertion is “depleting.”
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| 9. |
- Dang, Junhua, et al.
(author)
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When the poor excel : Poverty facilitates procedural learning
- 2016
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In: Scandinavian Journal of Psychology. - : Wiley. - 0036-5564 .- 1467-9450. ; 57:4, s. 288-291
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Journal article (peer-reviewed)abstract
- Recent research has shown that poverty directly impeded cognitive functions because the poor could be easily distracted by monetary concerns. We argue that this effect may be limited to functions relying on working memory. For functions that rely on proceduralized processes however, monetary concerns elicited by reminding of financial demands would be conducive rather than harmful. Our results supported this hypothesis by showing that participants with lower income reached the learning criterion of the information-integration categorization task faster than their more affluent counterparts after reminding of financial demands.
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| 10. |
- Shanshan, Xiao, et al.
(author)
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When More Depletion Offsets the Ego Depletion Effect
- 2014
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In: Social Psychology. - : Hogrefe Publishing Group. - 2151-2590 .- 1864-9335. ; 45:5, s. 421-425
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Journal article (peer-reviewed)abstract
- The ego depletion effect has been consistently replicated using the typical paradigm that consists of two consecutive tasks. However, striking contradiction exists in studies employing multiple tasks. The aim of the current study is to replicate previous studies following a similar procedure and design in a sample of participants from a non-western cultural background (Chinese), while strictly controlling other confounding factors, such as task duration. Results indicated that although ego depletion occurred after performing a single initial self-control task, engaging in multiple tasks did indeed offset the depletion effect. These findings are contrary to the resource-based view of ego depletion (i.e., the strength model) but more consistent with other theoretical frameworks, such as the cognitive control theory.
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