• Title/Summary/Keyword: Perceptual Effect

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The Influence of perceptual load on target identification and negative repetition effect in post-cueing forced choice task (순간 노출되는 표적의 식별과 부적 반복효과에 지각부하가 미치는 영향)

  • Kim, Inik;Park, ChangHo
    • Korean Journal of Cognitive Science
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    • v.33 no.1
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    • pp.1-22
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    • 2022
  • Lavie's perceptual load theory (Lavie, 1995) proposes that the influence of distractors would be blocked as the load gets higher. Studies of perceptual load have usually adopted the flanker task, developed by Eriksen and Eriksen (1974), which measures reaction time on the target flanked by distractors. In the post-cueing forced task, participants should report the identity of the target cued later, and negative repetition effect (NRE) has often been observed. NRE means the effect that the accuracy of identification is worse when the target is flanked by the same nontargets than when flanked by different nontargets. This study has tried to check whether perceptual load has an effect on identification rate and NRE. Experiment 1 manipulated the similarity between targets and a distractor, and observed a tendency of NRE, but not the effect of perceptual load. Experiment 2 used 4, 2 (in two kinds of diagonal arrangement), or none distractors of the same identity to burden more perceptual load. NRE was significant and perceptual load showed significance but not a linear trend. Experiment 3 checked again whether NRE would be varied according to two levels of perceptual load strengthened by positional variability of load stimuli, but did not find the effect of perceptual load. It is concluded that perceptual load might have a limited effect on the early stage of perceptual processing due to divided attentional processing of the targets briefly exposed. Implications of this study were discussed.

Effects of Perceptual Curiosity on Attitude towards Different Cultures and Intention to Recommend Products from Different Cultures: Focusing on Halal Products (지각적 호기심이 이문화에 대한 태도 및 이문화 제품의 추천의도에 미치는 영향 : 할랄제품을 중심으로)

  • Ju, Seon-Hee
    • Journal of the Korea Convergence Society
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    • v.11 no.6
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    • pp.137-144
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    • 2020
  • As foreign tourists visiting Korea increase and Koreans traveling overseas become more frequent, a study on the level of domestic consumers' acceptance of different cultures and the perception towards products from different cultures is needed. In this study, a perceptual curiosity, which is an individual personality, was divided into Diverse perceptual curiosity and Specific perceptual curiosity, and effects of perceptual curiosity on an attitude towards different cultures and an intention to recommend products from different cultures were examined. To prove validity of measurement items and reliability of data, SPSS and LISREL were used and to prove a hypothesis, a structural equation model was used. The study results showed that the Diverse perceptual curiosity, which is Hypothesis 1, had a positive effect on the attitude towards different cultures while the Specific perceptual curiosity, which is Hypothesis 2, did not have a significant effect on the attitude towards different cultures. In addition, it was shown that the attitude towards different cultures, which is Hypothesis 3, had a significant positive effect on the intention to recommend the products from different cultures.

Analysis of the JND-Suppression Effect in Quantization Perspective for HEVC-based Perceptual Video Coding

  • Kim, Jaeil;Kim, Munchurl
    • IEIE Transactions on Smart Processing and Computing
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    • v.4 no.1
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    • pp.22-27
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    • 2015
  • Transform-domain JND (Just Noticeable Difference)-based for PVC (Perceptual Video Coding) is often performed in quantization processes to effectively remove perceptual redundancy. This study examined the JND-suppression effects on quantized coefficients of transform in HEVC (High Efficiency Video Coding). To reveal the JND-suppression effect in quantization, the properties of the floor functions were used for modeling the quantized coefficients, and a JND-adjustment process in an HEVC-compliant PVC scheme was used to tune the JND values by analyzing the JND suppression effect. In the experimental results, the bitrate reduction decreases slightly, but the PSNR and perceptual quality are improved significantly when the proposed JND adjustment process is applied.

Effect of reference on the distortion of 3D slant perception of semitransparent motion-induced surface during disjunctive eye movement (원근방향 추적 눈 운동 시 참조자극이 자극운동 유도 표면의 삼차원 경사지각 왜곡에 미치는 효과)

  • 이형철
    • Korean Journal of Cognitive Science
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    • v.14 no.3
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    • pp.51-59
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    • 2003
  • Various perceptual distortions in spatial vision occur during eye movements. Most of the studies on perceptual distortion have focused on the conjunctive eye movements. Recently, Li, Kham, Kim & Yoon (2002) reported that subjects experienced perceptual distortion of 3D slant of an object defined by the spatiotemproal pattern of occlusion. The present research examined whether the subjects experienced the same perceptual distortion in the target object whose luminance is different from that of background. It also examined the effect of the reference on the perceptual distortion of 3D slant of an object.

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The Effects of Perceptual Load and Category-Specific Dilution on Visual Search (지각적 부담과 범주 별 희석이 시각 탐색에 미치는 영향)

  • Rhim, Jee-Hyang;Yi, Do-Joon
    • Korean Journal of Cognitive Science
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    • v.21 no.1
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    • pp.177-197
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    • 2010
  • Three experiments compared two hypotheses on visual selection; perceptual load hypothesis and dilution hypothesis. The perceptual load hypothesis predicts that perceptual load of task-relevant processing determines the level of task-irrelevant processing whereas the dilution hypothesis predicts that competition for limited-capacity attentional resource, not perceptual load, determines the locus of selection. To compare the two hypotheses, we investigated the influence of perceptual load in visual search on response interference by a distractor. Experiment 1 and 2 manipulated perceptual load by the set size of a search array and the colors of a target and non-targets, respectively. As a result, distractor interference decreased with a set size regardless of perceptual load. In order to further test the set size effect, Experiment 3 manipulated the perceptual categories of non-targets and a distractor. The results showed that distractor interference decreased only when non-targets belonged to the same category as a distractor. Overall, the current findings support the dilution hypothesis, but not the perceptual load hypothesis, and provide the evidence that visual selection is constrained by capacity-limited, category-specific attentional resources.

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A Study on the Attribution of Expected Selection and Perceptual Satisfaction Factor in Wedding Dress and Wedding Make-up (신부의 웨딩드레스와 화장에 대한 기대선택 속성과 지각만족 요인에 관한 연구)

  • Yoo, Jae-Suk;Yoo, Tai-Soon
    • Fashion & Textile Research Journal
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    • v.8 no.1
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    • pp.55-63
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    • 2006
  • The purpose of this study examines difference of cunsumer satisfaction by expected selection attribute of wedding dress and bride make-up. It is looking into influencing variables in consumer satisfaction, and is supplying real information to wedding market. The subjects of this study were 241 women getting married within one year of Daegu. The data were analyzed by using frequency, mean, the standard deviation, ANOVA, duncan test, correlation analysis, cross-analysis. Conclusion obtained from the results and discussions of the research are as follows: 1) In the attribution of expected selection according to occupation, blue-collar women are concerned about cost factor but they are low content with the perceptual satisfaction factor. 2) When selecting places for wedding dresses and wedding make-up, in the attribute of expected selection about the number of visiting the shop for wedding dresses and make-up, people who visit over 7 dress shops are highly interested in the appearance fancy degree, advertisements effect factors. But they are concerned with advertisements effect factor, cost factor in the perceptual satisfaction factor about wedding dress. Besides, the more they get chances to visit many dress shops, they are concerned with advertisements, cost factors, and satisfied with both the effect of advertisements and appearance factor degree in the attribution of expected selection about wedding make-up. 3) In the attribution of expected selection about the cost of wedding dresses and make-up, the lower the cost paid, people are interested in price factor. Furthermore, in the attribution of expected selection about the wedding dress and make-up cost, those who spent over 150 million Won are interested in quality, others influence factor, and the case of less than 120~150 million Won, people are highly interested in the appearance fancy degree, advertisements effect factor, and the women are satisfied with the advertisement effect factor in the perceptual satisfaction factor of wedding make-up.

A Study on Effect of Perceptual Orientation to the Army Nurses′Effectiveness Introduction (군 간호원의 지각 향상이 근무효율성에 미치는 영향)

  • Chung, Sook
    • Journal of Korean Academy of Nursing
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    • v.3 no.1
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    • pp.67-83
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    • 1972
  • This study is designed to reveal the relationship of Army Nurses′ effectiveness to their perceptual orientation. Studies on nurses are very few despite of highly professional duties which deal with human lives. Effectiveness of nurses could be seen from both within and without. At present study, however, the researcher tried to work on the point of view of perceptual psychology. The study was designed !o fined the relationship of "Perceptual Orientation Scale"to their ratings training courses and experiences. The subjects are limited to nurses serving in the Army of the Republic of Korea. Many researches on nurses, such as Young Bok Lee(1970), Sook Ja Yoo(1971) Young Sook Hong (1970), Ik Do Choi (1966), are dealt with their attitude, morale, how to see their profession, adjustability and college lives, tut no one ever studied their subjective perceptual orientation. Method "Perceptual Orientation Scale"(Chunghoon Choy, 1971) was administered to 315 Army Nurses during the period of June to November 1971, and the relationship with their ratings by their supervising officers, training courses and their experiences were tested. All the relationship were calculated by the method of Chi-Squares. Result 1) There is no significant relationship between "Perceptual Orientation Scale" and their ratings. 2) There is no significant relationship between "Perceptual Orientation Scale" and their training courses. 3) There is no significant relationship between "Perceptual Orientation Scale" and their experiences. Conclusion As far as calculated result are concerned the research could not fined any Significant relationship. Therefore we can conclude that "Perceptual Orientation Scale"of the nurses has nothing to do with nurses effectiveness. It means the Army Nurses rating method has to be modified at once. Also we have to continue to fined mole significant effectiveness criteria and other researches be encouraged.

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The Effect of Composite Incompatibility on Relationship Commitment and Performances in Franchiser-Franchisee Relationship (프랜차이즈 가맹본부와 가맹점 간 이해관계불일치가 관계몰입과 관계성과에 미치는 영향)

  • Yi, Ho-Taek
    • Journal of Distribution Science
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    • v.15 no.2
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    • pp.91-100
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    • 2017
  • Purpose - Domestic franchise market has been grown steadily, reaching 50 trillion won in sales and 3,360 franchise headquarters in 2014. A franchise system is an effective business system for the franchisees to lower the failure rate due to the fact that the inexperienced entrepreneurs are supported by their headquarters through the franchisee contract. However, there are also conflicts between franchiser and franchisee behind the quantitative growth of domestic franchise industry. Therefore, it is very important to structure the causes of conflicts and to examine the effect of factors on the relationship commitment and performances. Research design, data, and methodology - In this study, the author divides the composite incompatibility between the franchise and the franchisee into goal incongruity, domain dissensus, and perceptual differences, and examines each dimension to the relationship with commitment and performances. To verify the proposed research model and test hypotheses, the author selected 200 franchise responses in food and beverage industry. The data were analyzed using SPSS 18.0 and AMOS structural equation modeling program. Results - The empirical findings provide goal incongruity and perceptual differences have a negative effect on the affective commitment, but not the calculative commitment. In addition, affective commitment and calculative commitment are found to have a positive effect on re-contractual intention and extended brand shop running intention, respectively. Affective commitment have a stronger effect on re-contractual intention than calculative commitment. Conclusions - First of all, the fact that goal incongruity and perceptual differences negatively affect the affective commitment, but it does not affect the calculative commitment. It means the relationship commitment in distribution channel are multi-dimensional concept that may be attributed to emotional or affective dimensions but may exist in terms of necessity or power-dependence. Second, the level of relationship commitment such as affective and calculative commitment to franchise headquarters positively affects the re-contractual intention and franchiser's extend brand shop running intention suggest that franchiser should encourage and support existing franchisee's commitment. Third, the fact that affective commitment has a greater effect on relationship performance than calculative commitment means to induce franchisee's affective commitment and to prevent the inconsistency between goals and perceptual differences.

Cross-linguistic Study of Perceptual Cues to F0 Variations (한·중 청자의 음높이 변화에 대한 지각 연구)

  • Yoon, Eunkyung;Cao, Wenkai
    • Journal of Korean language education
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    • v.28 no.3
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    • pp.25-51
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    • 2017
  • This study aimed to identify the differences in pitch perception between tonal and non-tonal language listeners. A total of 60 Korean and Chinese listeners participated in the perception test. A two-syllable nonsense word /paba/ was manipulated in five steps. The pitch height or contour on the second syllable was raised or lowered. Both groups were asked to select which of the two syllables had the higher pitch. The findings showed that the majority of Korean listeners (GK) perceived decreased pitch as each peak of the syllable was lowered and perceived increased pitch as it was raised, which means the pitch height is a primary perceptual cue for GK. However, Chinese listeners (GC) perceived sensitive pitch movements as the pitch contour changed. GC's perception may presumably be affected by the L1's tone sandhi. We found it reasonable to assume that language experience has a significant effect on the cross-linguistic perceptual differences between tone and non-tonal language listeners.

The Effects of Crafts Programmes on Visual Perceptual Development of the Children with Developmental Disabilities (수예공작 프로그램 적용이 발달장애 아동의 시지각 발달에 미치는 영향)

  • Kim, Nam-Soon;Kim, Dong-Hyun;Kim, Hee-Jung
    • The Korean Journal of Health Service Management
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    • v.6 no.2
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    • pp.141-150
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    • 2012
  • The purpose of this study to know the effects of craft programmes on the visual perceptual development of the children with developmental disabilities. Sixty children were diagnosed with developmental disabilities. They divided into two groups that were the experimental group and control group. The children were subjected at K-Rehabilitation Center and C-child Care Center in Gyeong-Ju for 6 weeks from Feb to Apr (twice a seek, total 12 times) in 2011. The development programmes for the children disabilities are based on occupational therapy, physical therapy, and speech therapy. The intervention of experimental group included occupational therapy based on the craft programmes, physical therapy, and speech therapy. The one of control group included occupational therapy based on function, physical therapy, and speech therapy. The MVPT-3 and K-DTVP-2 were done before and after the therapy to compare visual perceptual development ability and to know the results of the test. Results were as follow: First, there were significant differences of MVPT-3 score before and after the therapy. Second, there were significant differences of K-DTVP-2 score before and after the therapy. The results mean the craft programmes had a positive effect on the visual perceptual development of the children with developmental disabilities.