Is international affective picture system (IAPS) appropriate for using in Iranian culture, comparing to the original normative rating based on a North American sample

2017 ◽  
Vol 41 (S1) ◽  
pp. S520-S520 ◽  
Author(s):  
N. Zamani

BackgroundPrevious studies have shown that cultural context has an influence on emotion and cognition. In this study the emotional response to international affective picture system (IAPS) was compared between Iranians and normative ratings of Americans young adults.MethodOne hundred and thirty eight Iranian university students (85 women, 48 men) age 18 to 52 (average= 31, SD = 7.76) enrolled in the study. Participants’ emotional response to IAPS images were rated in three dimensions (valence, arousal, dominance) using self-assessment Manikin (SAM) system. Then, valence, arousal, dominance scores were compared to those of 100 American undergraduates (50 females, 50 males) of the same age group, enrolled at Florida university and surveyed by Prof. PJ Lang in 2008.ResultOur results indicate that there is complete correlation between the mean ratings of valence, arousal and dominance between Iranian and American participants. Also the results showed similarities in valence ratings, but arousal ratings especially in female participants were different. The relationship between arousal and valence showed a similar boomerang shaped distribution seen with the North American sample. Iranian sample showed positively offset and negative bias comparable to the American counterparts.ConclusionThe results are promising in the sense that IAPS images can be used in studies within Iranian cultural context. However, arousal values require a modification for their proper application in Iranian cultural context.Disclosure of interestThe author has not supplied his/her declaration of competing interest.

2008 ◽  
Vol 57 (4) ◽  
pp. 270-275 ◽  
Author(s):  
Cristina Lasaitis ◽  
Rafaela Larsen Ribeiro ◽  
Orlando Francisco Amodeo Bueno

OBJECTIVE: The study presents the Brazilian norms for 240 new stimuli from International Affective Picture System (IAPS), a database of affective images widely used in research, compared to the North-American normative ratings. METHODS: The participants were 448 Brazilian university students from several courses (269 women and 179 men) with mean age of 24.2 (SD = 7.8), that evaluated the IAPS pictures in the valence, arousal and dominance dimensions by the Self-Assessment Manikin (SAM) scales. Data were compared across the populations by Pearson linear correlation and Student's t-tests. RESULTS: Correlations were highly significant for all dimensions; however, Brazilians' averages for arousal were higher than North-Americans'. CONCLUSIONS: The results show stability in relation to the first part of the Brazilian standardization and they are also consistent with the North-American standards, despite minor differences relating to interpretation of the arousal dimension, demonstrating that IAPS is a reliable instrument for experimental studies in the Brazilian population.


Psihologija ◽  
2013 ◽  
Vol 46 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Sasa Drace ◽  
Emir Efendic ◽  
Mirna Kusturica ◽  
Lamija Landzo

In this study the normative ratings of the International Affective Picture System (IAPS, Center for the Study of Emotion and Attention [CSEA], 1995) were compared with the ratings from a Bosnian sample. Seventy-two psychology undergraduates from the University of Sarajevo (Bosnia and Herzegovina) rated valence, dominance and arousal for a stratified sample of 60 pictures that was selected from the IAPS. Reliability coefficients indicate that the self-report ratings are internally consistent. The affective ratings from our sample correlated strongly with the North American ratings at: .95, .81 and .91, respectively for valence, arousal and dominance. Consistent with expectations, mean valence and dominance ratings did not differ significantly between the Bosnian and North American sample. Furthermore, plotting of the Bosnian valence and arousal ratings results in a similar boomerang shaped distribution as the North American affective ratings. Taken together, findings obtained from the Bosnian sample confirm the cross-cultural validity of the IAPS.


2013 ◽  
Vol 50 (9) ◽  
pp. 895-903 ◽  
Author(s):  
Alexander Averianov ◽  
J. David Archibald

A parsimony analysis of the distribution of 408 characters in 73 taxa of Cretaceous eutherians and related taxa places three species of Paranyctoides, the Asiatic P. quadrans and the North American P. sternbergi and P. maleficus, into a monophyletic taxon supported by three unambiguous synapomorphies. In this analysis P. quadrans has three autapomorphies, but in the analysis using combined terminal taxon for the entire sample of North American Paranyctoides two of these autapomorphies (development of stylar cusps C and D on upper molars) disappeared because these characters are also variably present in the North American sample. The remaining autapomorphy of P. quadrans, m3 shorter than m2, is known from a single specimen and also may be affected by individual variation. The North American sample of Paranyctoides cannot be clearly separated into distinct species on morphological or morphometric grounds and is considered as representing a single species, P. sternbergi Fox, 1979 (= P. maleficus Fox, 1984, syn. nov.). It differs from the Asiatic P. quadrans (Nesov, 1993) only in having a sharp lingual ridge on p5 and m3 longer than m2. Paranyctoides is the sister taxon to Zhelestidae; this clade is supported by four unambiguous synapomorphies.


1998 ◽  
Vol 46 (2) ◽  
pp. 109-124 ◽  
Author(s):  
Virpi Uotinen

This study examined perceptions of age among Finnish males and females in three age groups; twenty-five to thirty-nine-year-olds ( n = 446), forty to fifty-four-year-olds ( n = 482) and fifty-five to sixty-four-year-olds ( n = 427). The age perceptions of the Finnish sample were further compared with those of a North-American sample with corresponding age groups ( n = 169, n = 187, n = 222) reported by Barak, Stern, and Gould (1988). Four age concepts used were chronological age, subjective age, ideal age, and disparity age. As expected on the basis of previous studies in age identification, no difference was found between Finnish males and females in terms of subjective age. Ideal age, however, differentiated Finnish males and females; the age ideal of females was significantly higher when compared with males with respective chronological ages. The comparison between Finnish and North-Eastern U.S. sample indicated that the latter group had more youthful age identity while the Finns expressed a greater acceptance of their present age status. This was seen in higher subjective and ideal ages of Finns when compared with their North-American counterparts. Socio-cultural differences in terms of meanings associated with chronological age and aging are discussed.


2010 ◽  
Vol 42 (4) ◽  
pp. 373-386 ◽  
Author(s):  
Christian DOLNIK ◽  
Andreas BECK ◽  
Daria ZARABSKA

AbstractCladonia rei and Cladonia subulata are morphologically similar, but chemically different cup lichens of dry grasslands and nutrient-poor ruderal habitats. Recently, C. rei has been synonymized with C. subulata on the basis of combined morphological and chemical investigations. However, doubts remained due to a molecular divergent North American sample of C. rei compared to European C. subulata. To clarify the situation, using molecular methods, we analysed chemically different European samples of C. rei and C. subulata, as well as other morphologically or chemically similar Cladonia species. Molecular data show that European and North American samples of C. rei belong to the same clade, which is closely related to C. fimbriata and followed by a subclade with C. coniocraea and C. ochrochlora. The subclade of C. subulata appears to be distinct from C. rei. In concordance with molecular data, the presence of homosekikaic acid is the determining chemical feature for C. rei. In addition, C. humilis and C. innominata proved to be molecularly distinct species.


2008 ◽  
Vol 43 (5) ◽  
pp. 425-431 ◽  
Author(s):  
Beth I. Schwartz ◽  
Jonathan M. Mansbach ◽  
Jenna G. Marion ◽  
Debra K. Katzman ◽  
Sara F. Forman

PLoS ONE ◽  
2019 ◽  
Vol 14 (10) ◽  
pp. e0224141 ◽  
Author(s):  
Connie Svob ◽  
Lidia Y. X. Wong ◽  
Marc J. Gameroff ◽  
Priya J. Wickramaratne ◽  
Myrna M. Weissman ◽  
...  

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