Displaying publications 1 - 20 of 76 in total

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  1. Conroy-Beam D, Buss DM, Asao K, Sorokowska A, Sorokowski P, Aavik T, et al.
    Sci Rep, 2019 11 15;9(1):16885.
    PMID: 31729413 DOI: 10.1038/s41598-019-52748-8
    Humans express a wide array of ideal mate preferences. Around the world, people desire romantic partners who are intelligent, healthy, kind, physically attractive, wealthy, and more. In order for these ideal preferences to guide the choice of actual romantic partners, human mating psychology must possess a means to integrate information across these many preference dimensions into summaries of the overall mate value of their potential mates. Here we explore the computational design of this mate preference integration process using a large sample of n = 14,487 people from 45 countries around the world. We combine this large cross-cultural sample with agent-based models to compare eight hypothesized models of human mating markets. Across cultures, people higher in mate value appear to experience greater power of choice on the mating market in that they set higher ideal standards, better fulfill their preferences in choice, and pair with higher mate value partners. Furthermore, we find that this cross-culturally universal pattern of mate choice is most consistent with a Euclidean model of mate preference integration.
    Matched MeSH terms: Choice Behavior/physiology*
  2. Walter KV, Conroy-Beam D, Buss DM, Asao K, Sorokowska A, Sorokowski P, et al.
    Proc Biol Sci, 2021 Jul 28;288(1955):20211115.
    PMID: 34284630 DOI: 10.1098/rspb.2021.1115
    A wide range of literature connects sex ratio and mating behaviours in non-human animals. However, research examining sex ratio and human mating is limited in scope. Prior work has examined the relationship between sex ratio and desire for short-term, uncommitted mating as well as outcomes such as marriage and divorce rates. Less empirical attention has been directed towards the relationship between sex ratio and mate preferences, despite the importance of mate preferences in the human mating literature. To address this gap, we examined sex ratio's relationship to the variation in preferences for attractiveness, resources, kindness, intelligence and health in a long-term mate across 45 countries (n = 14 487). We predicted that mate preferences would vary according to relative power of choice on the mating market, with increased power derived from having relatively few competitors and numerous potential mates. We found that each sex tended to report more demanding preferences for attractiveness and resources where the opposite sex was abundant, compared to where the opposite sex was scarce. This pattern dovetails with those found for mating strategies in humans and mate preferences across species, highlighting the importance of sex ratio for understanding variation in human mate preferences.
    Matched MeSH terms: Choice Behavior
  3. Rahman NA, Fadzly N, Dzakwan NM, Zulkifli NH
    Trop Life Sci Res, 2014 Aug;25(1):95-103.
    PMID: 25210590 MyJurnal
    We conducted a series of experiments to test the numerical competency of two species of birds, Corvus splendens (House Crow) and Acridotheres tristis (Common Myna). Both species were allowed to choose from seven different groups of mealworms with varying proportions. We considered the birds to have made a correct choice when it selected the food group with the highest number of mealworms. Our overall results indicated that the Common Myna is able to count numbers (161 successful choices out of 247 trials) better than House Crows (133 successful choices out of 241 trials). We suspect that House Crows do not rely on a numerical sense when selecting food. Although House Crows mostly chose the cup with more mealworms (from seven food item proportions), only one proportion was chosen at rate above random chance. The Common Myna, however, were slow performers at the beginning but became increasingly more capable of numerical sense during the remainder of the experiment (four out of seven food proportion groups were chosen at a rate above random chance).
    Matched MeSH terms: Choice Behavior
  4. Mohammed Shuaib, Zarita Zainuddin
    Sains Malaysiana, 2017;46:1997-2005.
    Integrating an exit choice model into a microscopic crowd dynamics model is an essential approach for obtaining more
    efficient evacuation model. We describe various aspects of decision-making capability of an existing rule-based exit
    choice model for evacuation processes. In simulations, however, the simulated evacuees clogging at exits have behaved
    non-intelligently, namely they do not give up their exits for better ones for safer egress. We refine the model to endow
    the individuals with the ability to leave their exits due to dynamic changes by modifying the model of their excitement
    resulted from the source of panic. This facilitates the approximately equal crowd size at exits for being until the end
    of the evacuation process, and thereby the model accomplishes more optimal evacuation. For further intelligence, we
    introduce the prediction factor that enables higher probability of equally distributing evacuees at exits. A simulation to
    validate the contribution is performed, and the results are analyzed and compared with the original model.
    Matched MeSH terms: Choice Behavior
  5. Walters K, Cox A, Yaacob H
    Genet Epidemiol, 2019 Sep;43(6):675-689.
    PMID: 31286571 DOI: 10.1002/gepi.22212
    The default causal single-nucleotide polymorphism (SNP) effect size prior in Bayesian fine-mapping studies is usually the Normal distribution. This choice is often based on computational convenience, rather than evidence that it is the most suitable prior distribution. The choice of prior is important because previous studies have shown considerable sensitivity of causal SNP Bayes factors to the form of the prior. In some well-studied diseases there are now considerable numbers of genome-wide association study (GWAS) top hits along with estimates of the number of yet-to-be-discovered causal SNPs. We show how the effect sizes of the top hits and estimates of the number of yet-to-be-discovered causal SNPs can be used to choose between the Laplace and Normal priors, to estimate the prior parameters and to quantify the uncertainty in this estimation. The methodology can readily be applied to other priors. We show that the top hits available from breast cancer GWAS provide overwhelming support for the Laplace over the Normal prior, which has important consequences for variant prioritisation. This work in this paper enables practitioners to derive more objective priors than are currently being used and could lead to prioritisation of different variants.
    Matched MeSH terms: Choice Behavior
  6. Swami V, Tovée MJ
    Body Image, 2007 Dec;4(4):391-6.
    PMID: 18089286
    Ninety-six Malaysian and British men rated for physical attractiveness a set of photographs of real women in profile, with known body mass index (BMI) and waist-to-hip ratio (WHR). Results showed that BMI accounted for the greater amount of variance in all settings. There were also significant differences in preferences for body weight, with low resource, low socioeconomic status (SES) raters preferring a significantly heavier partner than high resource, high SES raters. The disparity with previous findings using line drawings of women in profile was discussed in terms of the weaknesses of line-drawn stimuli.
    Matched MeSH terms: Choice Behavior
  7. Swami V, Tovée MJ
    PLoS One, 2013;8(3):e57623.
    PMID: 23483919 DOI: 10.1371/journal.pone.0057623
    It has been suggested human female breast size may act as signal of fat reserves, which in turn indicates access to resources. Based on this perspective, two studies were conducted to test the hypothesis that men experiencing relative resource insecurity should perceive larger breast size as more physically attractive than men experiencing resource security. In Study 1, 266 men from three sites in Malaysia varying in relative socioeconomic status (high to low) rated a series of animated figures varying in breast size for physical attractiveness. Results showed that men from the low socioeconomic context rated larger breasts as more attractive than did men from the medium socioeconomic context, who in turn perceived larger breasts as attractive than men from a high socioeconomic context. Study 2 compared the breast size judgements of 66 hungry versus 58 satiated men within the same environmental context in Britain. Results showed that hungry men rated larger breasts as significantly more attractive than satiated men. Taken together, these studies provide evidence that resource security impacts upon men's attractiveness ratings based on women's breast size.
    Matched MeSH terms: Choice Behavior*
  8. Omar MS, Ariandi AH, Tohit NM
    J Res Pharm Pract, 2019 10 16;8(3):105-111.
    PMID: 31728340 DOI: 10.4103/jrpp.JRPP_19_35
    Objective: This study aimed to investigate the prevalence of practical problems with medications use experienced by elderly patients and the management strategy employed to overcome the problems. This study also aimed to evaluate the belief and attitude of elderly patients toward deprescribing.

    Methods: A cross-sectional study was conducted among elderly patients that seeking treatment in a primary care clinic in Malaysia from September to November 2018 using a set of researcher-assisted and validated questionnaire on their consent.

    Findings: A total of 182 elderly patients were included in this study. A majority of participants (n = 87, 47.8%) admitted experiencing practical problems with their medication use. There are varieties of choice of management strategy employed by elderly patients to overcome the problems. For the willingness to deprescribing, there were positive correlation for patients' age (rs (182) =0.183, P < 0.05) and number of medications (rs (182) =0.271, P < 0.01) with the burden factor. There were also a negative correlation of age (rs (182) = -0.174, P < 0.05) and number of medication (rs (182) = -0.176, P < 0.04) with appropriateness of medications.

    Conclusion: A majority of Malaysian elderly experience practical problems with their medication use. Elderly patients' belief and attitudes toward deprescribing were influenced by age and number of medications.

    Matched MeSH terms: Choice Behavior
  9. Loo JSE, Lim SW, Ng YK, Tiong JJL
    Int J Pharm Pract, 2017 Dec;25(6):429-437.
    PMID: 28211115 DOI: 10.1111/ijpp.12352
    OBJECTIVES: To identify factors influencing the decisions of Malaysian first-year pharmacy undergraduate students in private higher education when choosing to pursue a degree in pharmacy as well as their choice of private university.

    METHODS: This cross-sectional study employed a validated, self-administered questionnaire which was administered to 543 first-year pharmacy students from nine different private universities. Factor analysis was utilised to extract key factors from the responses. Descriptive and inferential statistics were used to analyse the data.

    KEY FINDINGS: Eight factors motivating students' decision to study pharmacy emerged from the responses, accounting for 63.8% of the variance observed. Students were primarily motivated by intrinsic interests, with work conditions and profession attributes also exerting significant influence. In terms of choice of private university, nine factors were identified, accounting for 73.8% of the variance observed. The image of the school and university were most influential factors in this context, followed by university safety, programme attributes and financial factors.

    CONCLUSIONS: First-year pharmacy students in the private higher education sector are motivated by intrinsic interest when choosing to study pharmacy over other courses, while their choice of private university is influenced primarily by the image of the school and university.

    Matched MeSH terms: Choice Behavior*
  10. Emang D, Lundhede TH, Thorsen BJ
    J Environ Manage, 2016 Nov 01;182:436-445.
    PMID: 27521689 DOI: 10.1016/j.jenvman.2016.07.033
    The protected coral reefs off the coast of Malaysia receive numerous tourists, while also being as fishing grounds. These joint environmental pressures raise the need for additional costly conservation measures. It is natural to consider the potential for expanding the 'user pays' principle, already implemented in the form of various user fees. This study explores the potential for price discrimination among scuba divers at Sipadan in Malaysia. The study applies a choice experiment to estimate scuba divers willingness to pay higher user fees for avoiding decreases of or getting improvements in environmental and recreational aspects of the diving experience. We investigate how sensitivity to fee size and hence willingness to pay vary with suitable selected characteristics of divers. We find potentials for a third degree price discrimination strategy exploiting higher willingness to pay among foreign divers (45%), male divers (16%) and people who has visited Sipadan several times (25%). Thus, revised pricing structures could significantly increase funds for the preservation of Sipadan.
    Matched MeSH terms: Choice Behavior*
  11. Stewart-Williams S, Butler CA, Thomas AG
    J Sex Res, 2016 11 02;54(9):1097-1105.
    PMID: 27805420 DOI: 10.1080/00224499.2016.1232690
    The aim of this study was to explore how people's sexual history affects their attractiveness. Using an Internet survey, 188 participants rated their willingness to engage in a relationship with a hypothetical individual with a specified number of past sexual partners, ranging from 0 to 60+. The effect of past partner number was very large. Average willingness ratings initially rose as past partner number rose, but then fell dramatically. For short-term relationships, men were more willing than women to get involved (although the difference was not large). For long-term relationships, in contrast, there was virtually no sex difference. Thus, contrary to the idea that male promiscuity is tolerated but female promiscuity is not, both sexes expressed equal reluctance to get involved with someone with an overly extensive sexual history. Finally, participants with an unrestricted sociosexual orientation (high SO participants) were more tolerant than low SO participants of prospective mates with higher numbers of past sexual partners but were also less tolerant of prospective mates with low numbers of past sexual partners.
    Matched MeSH terms: Choice Behavior/physiology*
  12. Yong ASJ, Lim KK, Fox-Rushby J, Ismail F, Hamzah E, Cheong MWL, et al.
    Value Health, 2023 Dec;26(12):1772-1781.
    PMID: 37741445 DOI: 10.1016/j.jval.2023.08.009
    OBJECTIVES: This study aims to quantify the preferences of patients with advanced cancer for quality of life (QoL) outcomes versus survival extension in Malaysia. The secondary aim of this study is to explore the change in preferences over time.

    METHODS: A discrete choice experiment was developed to include 7 attributes valued in cancer management: physical, psychological and social functioning, pain control, survival, place of death, and cost. Patients were recruited via convenience sampling from 2 Malaysian public hospitals. The survey questionnaire was administered to patients within 6 months of their cancer diagnosis with a follow-up 3 months later. Conditional logit regression was used to estimate the preference weight, relative attribute importance, and willingness to pay.

    RESULTS: One hundred valid responses were collected at baseline and 45 at follow-up. Respondents placed higher values on QoL improvements from severe to moderate or mild levels and to achieve home death over survival extension from 6 to 18 months. However, additional improvements (from moderate to mild) in some of the QoL outcomes were not valued as highly as life extension from 12 to 18 months, showing that it was vital for patients to avoid being in "severe" health dysfunction. Improving physical dysfunction from severe to mild yielded 3 times as much value as additional 1-year survival. After 3 months, the respondents' preferences changed significantly, with increased relative attribute importance of physical functioning, pain control, and cost.

    CONCLUSIONS: As QoL outcomes are valued more than survival, palliative care should be introduced as early as possible to alleviate suffering related to advanced cancer.

    Matched MeSH terms: Choice Behavior
  13. Ramlee F, Sanborn AN, Tang NKY
    Sleep, 2017 07 01;40(7).
    PMID: 28525617 DOI: 10.1093/sleep/zsx091
    Study objectives: We conceptualized sleep quality judgment as a decision-making process and examined the relative importance of 17 parameters of sleep quality using a choice-based conjoint analysis.

    Methods: One hundred participants (50 good sleepers; 50 poor sleepers) were asked to choose between 2 written scenarios to answer 1 of 2 questions: "Which describes a better (or worse) night of sleep?". Each scenario described a self-reported experience of sleep, stringing together 17 possible determinants of sleep quality that occur at different times of the day (day before, pre-sleep, during sleep, upon waking, day after). Each participant answered 48 questions. Logistic regression models were fit to their choice data.

    Results: Eleven of the 17 sleep quality parameters had a significant impact on the participants' choices. The top 3 determinants of sleep quality were: Total sleep time, feeling refreshed (upon waking), and mood (day after). Sleep quality judgments were most influenced by factors that occur during sleep, followed by feelings and activities upon waking and the day after. There was a significant interaction between wake after sleep onset and feeling refreshed (upon waking) and between feeling refreshed (upon waking) and question type (better or worse night of sleep). Type of sleeper (good vs poor sleepers) did not significantly influence the judgments.

    Conclusions: Sleep quality judgments appear to be determined by not only what happened during sleep, but also what happened after the sleep period. Interventions that improve mood and functioning during the day may inadvertently also improve people's self-reported evaluation of sleep quality.

    Matched MeSH terms: Choice Behavior*
  14. Suleiman A
    Med J Malaysia, 2001 Sep;56(3):319-23.
    PMID: 11732077
    A baby milk market was created in the late nineteenth and early twentieth centuries and was conceived through the mutual attraction of the manufacturers and doctors. This has partly attributed to the change from breast to artificial feeding. This study was conducted to determine whether marketing had any effect on infant feeding practices. Fifty Malay mothers whose last child was aged less than five years were asked, by questionnaire and by interview, to identify whether several marketing methods influenced their decision on the selection of infant feeding practice. It was found that these mothers felt milk advertisements on television were attractive (72%), were influenced by others to buy a particular brand of formula (38.4%), were influenced by free milk samples to buy a particular brand of milk formula (65.2%) and were not influenced by their doctors on the chosen method of feeding (68%). More studies should be conducted on a bigger sample in other settings and targeting other methods of marketing to substantiate the above results. Further, similar studies among Chinese and Indian mothers are also required.
    Matched MeSH terms: Choice Behavior*
  15. Salgado-Montejo A, Alvarado JA, Velasco C, Salgado CJ, Hasse K, Spence C
    Front Psychol, 2015;6:1382.
    PMID: 26441757 DOI: 10.3389/fpsyg.2015.01382
    A within-participants experiment was conducted in two countries (the UK and Colombia) in order to investigate the matching of shapes to taste words. Comparing the two countries allowed us to explore some of the cultural differences that have been reported thus far solely in terms of people's visual preferences. In particular, we addressed the question of whether properties other than angularity influence shape-valence and shape-taste matching (crossmodal correspondences). The participants in the present study repeatedly matched eight shapes, varying in terms of their angularity, symmetry, and number of elements to one of two words-pleasant or unpleasant and sweet or sour. Participants' choices, as well as the latency of their responses, and their hand movements, were evaluated. The participants were more likely to judge those shapes that were rounder, symmetrical, and those shapes that had fewer elements as both pleasant and sweet. Those shapes that were more angular, asymmetrical, and that had a greater number of elements, were more likely to be judged as both unpleasant and sour instead. The evidence presented here therefore suggests that aside from angularity and roundness, both symmetry/asymmetry and the number of elements present in a shape also influence valence and taste categorizations.
    Matched MeSH terms: Choice Behavior
  16. Baharuddin, A.R, Sharifudin, M.S.
    MyJurnal
    This study was carried out to determine recognition threshold and taste preference for three basic tastes (sweetness, saltiness and sourness) based on location (interior and coastal) among the Kadazandusun ethnic in Sabah, Malaysia. One hundred and ninety four (194) volunteers aged 20 to 55 years were selected randomly (stratified) as subject. Three Alternative Forced- Choice (3AFC) and hedonic test were used to determine the taste threshold and preference. The interior group had lower taste threshold for all tastes; sweet (10.97 g/L ± 3.69), salty (1.14 g/L ± 0.38), sour (0.0095 g/L ± 0.011) compared to the coastal group; sweet (11.56 g/L ± 3.71), salty (1.23 g/L ± 0.39), sour (0.0012 g/L ± 0.0034). For intensity and hedonic rating, the patterns of response varied based on location for sweet and sour taste. No significant different (p>0.05) was observed for salty taste. However, both groups preferred the base stimulus which concentration similar to the commercially available products tested. There is a correlation between taste threshold and optimum concentration. Individuals with preferred high taste intensity tend to have higher taste threshold. Location and culture can influenced individual taste preference. However, exposure and experience to taste sensation was the major factor on individual’s taste preference.
    Matched MeSH terms: Choice Behavior
  17. Shammakh M, Ali RT, Shaari T
    J Nutr Sci Vitaminol (Tokyo), 2020;66(Supplement):S222-S225.
    PMID: 33612599 DOI: 10.3177/jnsv.66.S222
    Consumers nowadays have more awareness for healthy foods and demanded healthier food choices to avoid health-related problems; therefore, industries had included health and nutrition claims on their products. Health and nutrition claims usually influence consumers' food choice decision. Products with health claim resulted in higher perception of healthiness and nutritional value of the product, even if the product was not considered as a healthy choice. The aim of this study was to assess whether the health and nutrition claims had led to a healthier perception or better evaluation of the product among consumers.

    METHODS: A cross-sectional survey was conducted using an online questionnaire on 385 respondents collected through convenience sampling. The survey consisted of four parts: socio-demographic background, health awareness, understanding and usage of health and nutrition claims, and purchase intention measured through the use of a mock packaging. Data collected were analyzed using SPSS version 22.

    RESULTS: Most of the respondents aged 18-30 (81.0%) and almost half of them were Malay (45.7%) with bachelor/master or PhD qualification (60.0%). The distribution of household income for all categories was almost similar (18.2-20.8%). There was a significant statistical relationship between health awareness and purchase intention among respondents (r=0.391, p<0.01).

    CONCLUSIONS: Health and nutrition claims influenced consumer's perceptions and purchase intention, especially for those who were more concerned about their health, thus, more focus on policy regarding claims is needed.

    Matched MeSH terms: Choice Behavior*
  18. Ho EC, Ong WMW, Li K, Zhang H, Bei YTE, Medapati SVR, et al.
    Int J Audiol, 2018 10;57(10):776-783.
    PMID: 29957077 DOI: 10.1080/14992027.2018.1476781
    OBJECTIVE: To examine the factors associated with late presentation at first hearing aid (HA) fitting, HA choice and usage among users in Singapore.

    DESIGN: Retrospective cross-sectional study.

    STUDY SAMPLE: 1068 subjects issued with HAs at a tertiary hospital from 2001 to 2013.

    RESULTS: Half of the subjects presented with more severe (>55 dB) hearing loss (HL) in their better ear. In multivariable analysis, older age, Malay ethnicity, conductive and mixed HL, and combination type of HL were associated with more severe HL at first presentation. Over 70% of subjects were older than 65 years. Worse pure tone audiometry (PTA) thresholds of the better ear, gradual onset and sensorineural HL were associated with older age presentation. For unilaterally fitted subjects, PTA thresholds were the only determinant of having the better ear aided. Better PTA thresholds, younger age and sensorineural HL were associated with choosing in ear compared to behind the ear HAs. Younger age and worse PTA of the better ear were associated with ≥4 h of daily HA usage.

    CONCLUSIONS: Age, ethnicity and type of HL were important determinants for more severe HL at first HA fitting. Older patients and those with better hearing were less likely to use their HAs regularly.

    Matched MeSH terms: Choice Behavior*
  19. Mushtaq F, Wilkie RM, Mon-Williams MA, Schaefer A
    Neuroimage, 2016 Jan 15;125:868-879.
    PMID: 26497268 DOI: 10.1016/j.neuroimage.2015.10.046
    Substantial evidence indicates that decision outcomes are typically evaluated relative to expectations learned from relatively long sequences of previous outcomes. This mechanism is thought to play a key role in general learning and adaptation processes but relatively little is known about the determinants of outcome evaluation when the capacity to learn from series of prior events is difficult or impossible. To investigate this issue, we examined how the feedback-related negativity (FRN) is modulated by information briefly presented before outcome evaluation. The FRN is a brain potential time-locked to the delivery of decision feedback and it is widely thought to be sensitive to prior expectations. We conducted a multi-trial gambling task in which outcomes at each trial were fully randomised to minimise the capacity to learn from long sequences of prior outcomes. Event-related potentials for outcomes (Win/Loss) in the current trial (Outcomet) were separated according to the type of outcomes that occurred in the preceding two trials (Outcomet-1 and Outcomet-2). We found that FRN voltage was more positive during the processing of win feedback when it was preceded by wins at Outcomet-1 compared to win feedback preceded by losses at Outcomet-1. However, no influence of preceding outcomes was found on FRN activity relative to the processing of loss feedback. We also found no effects of Outcomet-2 on FRN amplitude relative to current feedback. Additional analyses indicated that this effect was largest for trials in which participants selected a decision different to the gamble chosen in the previous trial. These findings are inconsistent with models that solely relate the FRN to prediction error computation. Instead, our results suggest that if stable predictions about future events are weak or non-existent, then outcome processing can be determined by affective systems. More specifically, our results indicate that the FRN is likely to reflect the activity of positive affective systems in these contexts. Importantly, our findings indicate that a multifactorial explanation of the nature of the FRN is necessary and such an account must incorporate affective and motivational factors in outcome processing.
    Matched MeSH terms: Choice Behavior/physiology*
  20. Goto N, Mushtaq F, Shee D, Lim XL, Mortazavi M, Watabe M, et al.
    Biol Psychol, 2017 09;128:11-20.
    PMID: 28666891 DOI: 10.1016/j.biopsycho.2017.06.004
    We investigated whether well-known neural markers of selective attention to motivationally-relevant stimuli were modulated by variations in subjective preference towards consumer goods in a virtual shopping task. Specifically, participants viewed and rated pictures of various goods on the extent to which they wanted each item, which they could potentially purchase afterwards. Using the event-related potentials (ERP) method, we found that variations in subjective preferences for consumer goods strongly modulated positive slow waves (PSW) from 800 to 3000 milliseconds after stimulus onset. We also found that subjective preferences modulated the N200 and the late positive potential (LPP). In addition, we found that both PSW and LPP were modulated by subsequent buying decisions. Overall, these findings show that well-known brain event-related potentials reflecting selective attention processes can reliably index preferences to consumer goods in a shopping environment. Based on a large body of previous research, we suggest that early ERPs (e.g. the N200) to consumer goods could be indicative of preferences driven by unconditional and automatic processes, whereas later ERPs such as the LPP and the PSW could reflect preferences built upon more elaborative and conscious cognitive processes.
    Matched MeSH terms: Choice Behavior/physiology*
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