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Firstborns buy better for the greater good : Birth order differences in green consumption values
(2022-02) Otterbring, Tobias; Folwarczny, Michał; Department of Business and Economics
Despite multiple studies on the role of birth order in shaping human personality, marketing literature has largely neglected its role in shaping consumer behavior. We conducted a high-powered birth-order study on several consumption-related measures (Nmain analyses = 1358), which consistently enabled us to detect effect sizes even smaller than d = 0.20 with a power of 0.90. Participants filled out scales measuring susceptibility to normative interpersonal influence, the need for uniqueness, and the tendency to express the value of environmental protection through purchases and consumption behaviors. At a general level, we did not find any support for the notion that firstborns (vs. laterborns) are more susceptible to normative interpersonal influence or have a lower need for uniqueness. However, we found robust results regarding green consumption values, with firstborns valuing sustainability and proenvironmental consumption more than laterborns. Considering the number of consumers with siblings in the world and bearing in mind the ease with which birth-order data can be collected, these findings may have implications for activities aimed at mitigating climate change. However, the novel nature of our results calls for appropriate caution.
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Uppgræðsla flagmóa í Skagafirði
(Fræðaþing landbúnaðarins, 2007) Ágústsdóttir, Anna María; Aradóttir, Ása Lovísa; Maronsson, Bjarni
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Ranking Binary Unlabelled Necklaces in Polynomial Time
(Springer Science and Business Media Deutschland GmbH, 2022) Adamson, Duncan; Han, Yo-Sub; Vaszil, György
Unlabelled Necklaces are an equivalence class of cyclic words under both the rotation (cyclic shift) and the relabelling operations. The relabelling of a word is a bijective mapping from the alphabet to itself. The main result of the paper is the first polynomial-time algorithm for ranking unlabelled necklaces of a binary alphabet. The time-complexity of the algorithm is O(n6log 2n), where n is the length of the considered necklaces. The key part of the algorithm is to compute the rank of any word with respect to the set of unlabelled necklaces by finding three other ranks: the rank over all necklaces, the rank over symmetric unlabelled necklaces, and the rank over necklaces with an enclosing labelling. The last two concepts are introduced in this paper.
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Cognitive behavioural group therapy for adolescents with ADHD : a study of satisfaction and feasibility
(2022) Andersen, Ann Christin; Sund, Anne Mari; Thomsen, Per Hove; Lydersen, Stian; Young, Susan; Nøvik, Torunn Stene
Background: Adolescents with ADHD are at increased risk of adverse outcomes and a negative life trajectory into adulthood. Evidence regarding treatment specifically tailored for the needs of this age group are still limited. High dropout rates, discontinuation of medication and treatment resistance are common issues in this population, and the patient perspective on new treatment options is therefore important. In this study, we aimed to investigate treatment satisfaction and feasibility of a group CBT program for adolescents with ADHD. We further aimed to identify any baseline characteristics predicting satisfaction. Materials and methods: This study was part of a larger RCT of group CBT as add-on treatment for adolescents aged 14–18 years (Mean age 15.9 years, SD 1.3) with ADHD in Norway. Satisfaction and feasibility in the treatment group (n = 48) were measured by completion of an evaluation questionnaire, attendance of group sessions and a group-leaders checklist. Predictors of satisfaction were analysed using linear regression. Results: Overall satisfaction was very high with a significant age effect, the eldest participants being most satisfied. Attendance rate was high with few dropouts and medical adherence during the treatment period was good. Group-leaders generally self-evaluated adherence to treatment manual positively but addressing resistance towards homework as challenging. Conclusions: The participants were very satisfied with the group CBT treatment. Treatment options that are accepted and well-liked by the targeted population have the potential of reducing resistance towards treatment, improving future health and adherence to medication. The program is considered suitable for a clinical setting and may represent a feasible treatment supplement for adolescent ADHD.
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Parental support and monitoring as associated with adolescent alcohol and tobacco use by gender and age
(2021-12) Mills, Rosalina; Mann, Michael J.; Smith, Megan L.; Kristjansson, Alfgeir L.; Department of Psychology
Background: Parental support (PS) and parental monitoring (PM) are known protective factors against adolescent substance use (SU). However, little is known about whether PS and PM may affect SU outcomes differently by gender and age. This study examined the relationship between PS and PM and adolescent SU, specifically alcohol and tobacco use, stratified by gender and age group. Methods: Middle and high school students (n = 2351, 48.5% Female) completed surveys of self-reported SU, perceived PS and PM, and socioeconomic background. Age group was defined dichotomously as grade 7–8 Middle school and grade 9–10 High school students. PS and PM were each measured using previously validated tools. SU was measured by lifetime and past 30 days cigarette/alcohol use. One-way ANOVA and binary logistic regression models were completed. Odds ratios and means were reported. Results: PS and PM were significantly and negatively related to all outcome variables regardless of gender and age group. Mean differences in PS and PM were insignificant between age groups. Between genders, PM scores were significantly higher for girls (14.05) compared to boys (13.48) (p < 0.01). Odds Ratios of all four SU types (for alcohol and tobacco use) increased with higher age group, with ORs ranging from 1.45–2.61 (p <.05). Conclusions: PS and PM were protective against SU for all participants, consistent with previous literature. Girls reported greater parental monitoring than boys, irrespective of age-group. While girls experienced higher levels of monitoring, they did not report lower SU than boys. This suggests that monitoring girls more closely than boys appears unnecessary in preventing adolescent SU. Finally, PS was a more significant factor in preventing SU for older adolescents (high school aged group) than for younger adolescents, irrespective of gender suggesting that PS may be more impactful and important as adolescents age. As children mature, particularly from middle school to high school, PS may play a larger role in preventing SU for older adolescents compared to younger ones.

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