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Language Matters: The Autism-Spectrum Quotient in English, Mandarin and Bahasa Malaysia

Chee ZJ, de Vries M

J Autism Dev Disord, 2021 Sep 03.
PMID: 34478019 DOI: 10.1007/s10803-021-05253-9

The autism-spectrum quotient (AQ) measures autistic traits and has been studied in different countries, sometimes with the English version, and sometimes with translated versions. However, the language of the questionnaire might influence non-native English speakers' answering tendency. In the current study we compared the responses on the AQ of multilingual Malaysians (96 participants filled out the AQ in English and Mandarin, and 79 participants filled out English and Bahasa Malaysia). Participants scored higher on the English AQ compared to the Mandarin AQ, whereas there was no difference between the English and Bahasa Malaysia AQ score. Analysis of the response style suggests the same person might display discrepant response styles in different languages, which seems to be related to language proficiency.
Fulltext The factor structure and measurement invariance of the Autism Spectrum Quotient-28: A cross-cultural comparison between Malaysia and the Netherlands

Chee ZJ, Scheeren AM, De Vries M

Autism, 2024 Jan;28(1):32-42.
PMID: 36632803 DOI: 10.1177/13623613221147395

The AQ-28 is a questionnaire measuring autistic traits, that is, traits that are related to Autism Spectrum Conditions, but its reliability in other cultures has not been thoroughly evaluated. We, therefore, tested whether the properties of the AQ-28 are comparable between two countries with different cultures, Malaysia and the Netherlands. A total of 437 Malaysian and 818 Dutch participants completed the AQ-28 online. We measured whether the AQ-28 measures autistic traits similarly in Malaysia and the Netherlands. The AQ-28 measures autistic traits similarly, and the reliability was acceptable and good in the general population of Malaysia and the Netherlands, respectively. However, Malaysians scored higher than Dutch participants. Moreover, 11 AQ-28 items showed cultural bias, indicating that these items are answered/interpreted differently in Malaysia and the Netherlands. Cross-cultural differences in interpreting, reporting, and/or expressing autistic traits highlighted in this study could potentially explain why some items are culturally biased and why Malaysians score higher on these items. The findings of this work imply that cutoff scores derived from one culture should not be generalised to another culture. Moreover, the findings are informative for future development of culturally neutral or appropriate screening and diagnostic tools for autism.
The association between the behavior rating inventory of executive functioning and cognitive testing in children diagnosed with a brain tumor

de Vries M, de Ruiter MA, Oostrom KJ, Schouten-Van Meeteren AYN, Maurice-Stam H, Oosterlaan J, et al.

Child Neuropsychol, 2018 08;24(6):844-858.
PMID: 28693404 DOI: 10.1080/09297049.2017.1350262

Pediatric brain tumor survivors (PBTS) suffer from cognitive late effects, such as deteriorating executive functioning (EF). We explored the suitability of the Behavior Rating Inventory of Executive Function (BRIEF) to screen for these late effects. We assessed the relationship between the BRIEF and EF tasks, and between the BRIEF-Parent and BRIEF-Teacher, and we explored the clinical utility. Eighty-two PBTS (8-18 years) were assessed with EF tasks measuring attention, cognitive flexibility, inhibition, visual-, and working memory (WM), and with the BRIEF-Parent and BRIEF-Teacher. Pearson's correlations between the BRIEF and EF tasks, and between the BRIEF-Parent and BRIEF-Teacher were calculated. The BRIEF-Parent related poorly to EF tasks (rs < .26, ps > .01), but of the BRIEF-Teacher the WM-scale, Monitor-scale, Behavioral-Regulation-Index, and Meta-cognition-Index, and Total-score (rs > .31, ps < .01) related significantly to some EF tasks. When controlling for age, only the WM scale and Total score related significantly to the attention task (ps < .01). The inhibit scales of the BRIEF-Parent and BRIEF-Teacher correlated significantly (r = .33, p < .01). Children with clinically elevated scores on BRIEF scales that correlated with EF tasks performed worse on all EF tasks (ds 0.56-1.23, ps < .05). The BRIEF-Teacher Total and Index scores might better screen general EF in PBTS than the BRIEF-Parent. However, the BRIEF-Teacher is also not specific enough to capture separate EFs. Solely relying on the BRIEF as a screening measure of EFs in BPTS is insufficient. Questionnaires and tasks give distinctive, valuable information.
Fulltext University Students' Notion of Autism Spectrum Conditions: A Cross-Cultural Study

de Vries M, Cader S, Colleer L, Batteux E, Yasdiman MB, Tan YJ, et al.

J Autism Dev Disord, 2020 Apr;50(4):1281-1294.
PMID: 31901119 DOI: 10.1007/s10803-019-04343-z

Cultural background might influence knowledge and attitudes regarding autism, influencing willingness to interact. We studied whether beliefs, knowledge, contact, and attitude differed between the UK and Malaysia. With mediation analyses, we studied how these factors influenced willingness to interact. Autism was more often linked to food in the UK, and to upbringing in Malaysia. Knowledge, contact, and acceptance were greater in the UK. When excluding psychology students, Malaysian students were less willing to interact with autistic people. Knowledge and contact appeared to improve acceptance, but acceptance did not mediate the relation between country, beliefs, knowledge, and experience; and willingness to interact. Knowledge and contact regarding autism might improve acceptance in different cultures, but how acceptance could improve interaction is unclear.
Self-reported autistic traits and psychosocial outcomes among university students in Malaysia

Low HM, Zainal MS, Pang JC, Ang Y, de Vries M

Autism, 2024 Jan;28(1):174-186.
PMID: 37128140 DOI: 10.1177/13623613231167501

Most research on autism spectrum conditions is done on young children and not as much on young adults with autism spectrum conditions. Because of this, not much is known about how common autism spectrum conditions are in young adults and how they affect their mental and social health, especially in Southeast Asia. Based on self-reports, 2.8% of the 2732 university students we looked at in Malaysia might have been diagnosed or thought to have an autism spectrum condition. Students who said they had or thought they had autism spectrum conditions had lower self-efficacy, more stress and a lower quality of life than students who said they did not have autism spectrum conditions. The results showed that university students with autism spectrum condition are more likely to have bad psychological and social outcomes than their peers without autism spectrum condition. Also, the link between autistic traits and psychosocial outcomes could depend on the culture.
Pediatric Perceived Cognitive Functioning: Psychometric Properties and Normative Data of the Dutch Item Bank and Short Form

Marchal JP, de Vries M, Conijn J, Rietman AB, IJsselstijn H, Tibboel D, et al.

J Int Neuropsychol Soc, 2019 09;25(8):845-856.
PMID: 31179957 DOI: 10.1017/S1355617719000572

OBJECTIVE: With increasing numbers of children growing up with conditions that are associated with acquired brain injury, efficient neuropsychological screening for cognitive deficits is pivotal. Brief self-report measures concerning daily complaints can play an important role in such screening. We translated and adapted the pediatric perceived cognitive functioning (PedsPCF) self- and parent-report item bank to Dutch. This study presents (1) psychometric properties, (2) a new short form, and (3) normative data for the short form.
METHODS: A general population sample of children and parents was recruited. Dimensionality of the PedsPCF was assessed using confirmatory factor analyses and exploratory bifactor analyses. Item response theory (IRT) modeling was used to evaluate model fit of the PedsPCF, to identify differential item functioning (DIF), and to select items for the short form. To select short-form items, we also considered the neuropsychological content of items.
RESULTS: In 1441 families, a parent and/or child participated (response rate 66% at family level). Assessed psychometric properties were satisfactory and the predominantly unidimensional factor structure of the PedsPCF allowed for IRT modeling using the graded response model. One item showed meaningful DIF. For the short form, 10 items were selected.
CONCLUSIONS: In this first study of the PedsPCF outside the United States, studied psychometric properties of the translated PedsPCF were satisfactory, and allowed for IRT modeling. Based on the IRT analyses and the content of items, we proposed a new 10-item short form. Further research should determine the relation of PedsPCF outcomes with neurocognitive measures and its ability to facilitate neuropsychological screening in clinical practice.
Fulltext Zeolite Nanoparticles for Selective Sorption of Plasma Proteins

Rahimi M, Ng EP, Bakhtiari K, Vinciguerra M, Ali Ahmad H, Awala H, et al.

Sci Rep, 2015 Nov 30;5:17259.
PMID: 26616161 DOI: 10.1038/srep17259

The affinity of zeolite nanoparticles (diameter of 8-12 nm) possessing high surface area and high pore volume towards human plasma proteins has been investigated. The protein composition (corona) of zeolite nanoparticles has been shown to be more dependent on the plasma protein concentrations and the type of zeolites than zeolite nanoparticles concentration. The number of proteins present in the corona of zeolite nanoparticles at 100% plasma (in vivo state) is less than with 10% plasma exposure. This could be due to a competition between the proteins to occupy the corona of the zeolite nanoparticles. Moreover, a high selective adsorption for apolipoprotein C-III (APOC-III) and fibrinogen on the zeolite nanoparticles at high plasma concentration (100%) was observed. While the zeolite nanoparticles exposed to low plasma concentration (10%) exhibited a high selective adsorption for immunoglobulin gamma (i.e. IGHG1, IGHG2 and IGHG4) proteins. The zeolite nanoparticles can potentially be used for selectively capture of APOC-III in order to reduce the activation of lipoprotein lipase inhibition during hypertriglyceridemia treatment. The zeolite nanoparticles can be adapted to hemophilic patients (hemophilia A (F-VIII deficient) and hemophilia B (F-IX deficient)) with a risk of bleeding, and thus might be potentially used in combination with the existing therapy.
Fulltext The effects of music and auditory stimulation on autonomic arousal, cognition and attention: A systematic review

Chee ZJ, Chang CYM, Cheong JY, Malek FHBA, Hussain S, de Vries M, et al.

Int J Psychophysiol, 2024 May;199:112328.
PMID: 38458383 DOI: 10.1016/j.ijpsycho.2024.112328

According to the arousal-mood hypothesis, changes in arousal and mood when exposed to auditory stimulation underlie the detrimental effects or improvements in cognitive performance. Findings supporting or against this hypothesis are, however, often based on subjective ratings of arousal rather than autonomic/physiological indices of arousal. To assess the arousal-mood hypothesis, we carried out a systematic review of the literature on 31 studies investigating cardiac, electrodermal, and pupillometry measures when exposed to different types of auditory stimulation (music, ambient noise, white noise, and binaural beats) in relation to cognitive performance. Our review suggests that the effects of music, noise, or binaural beats on cardiac, electrodermal, and pupillometry measures in relation to cognitive performance are either mixed or insufficient to draw conclusions. Importantly, the evidence for or against the arousal-mood hypothesis is at best indirect because autonomic arousal and cognitive performance are often considered separately. Future research is needed to directly evaluate the effects of auditory stimulation on autonomic arousal and cognitive performance holistically.