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Search: WFRF:(Ronald Angelica)

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1.
  • Blom, Angelica, et al. (author)
  • Omnichannel-based promotions' effects on purchase behavior and brand image
  • 2017
  • In: Journal of Retailing and Consumer Services. - : Elsevier. - 0969-6989. ; 39:4, s. 286-295
  • Journal article (peer-reviewed)abstract
    • This paper examines the effects of utilizing consumers’ digital shopping traces when designing in-store promotions on purchase behavior and brand image. In two experimental studies with 526 and 550 espondents, the authors examine the effects of omnichannel-based promotions (e.g. using digital shopping trace to offer a promotion when the consumer enters the physical store) in two different product categories (utilitarian vs. hedonic), spontaneous/planned purchases and two different retail industries (durable good vs. travel). The results show that retailers benefit from using digital shopping traces as it increases purchases and enhances brand imagery. The effects are moderated by product category and type of purchase.
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2.
  • Bussu, Giorgia, et al. (author)
  • The latent structure of emerging cognitive abilities : An infant twin study
  • 2023
  • In: Intelligence. - : Elsevier. - 0160-2896 .- 1873-7935. ; 99, s. 101771-101771
  • Journal article (peer-reviewed)abstract
    • It is well known that genetic factors account for up to 70% of variability in cognition from childhood to adulthood. However, less is known about the first year of life. This study investigated the etiological factors influencing individual variability in different domains of emerging cognitive and motor abilities in early infancy, and to what extent genetic and environmental influences are unique or shared across different domains. We compared multivariate twin models built on scores from the five scales of the Mullen Scales of Early Learning (MSEL) in a community sample of monozygotic and dizygotic twins at 5 months of age (n=567). The results indicated a hierarchical etiological structure whereby a general genetic latent factor accounted for 54% of variance underlying the different domains of emerging cognitive and motor abilities (A=0.54, confidence interval CI=[0; 0.82]). We also found additional genetic influences that were specific to early motor and language development. Unlike previous findings on older children, we did not find significant influences of shared environment on the shared factor (C=0, CI=[0, 0.57]), or any specific scale. Furthermore, influences of unique environment, which include measurement error, were moderate and statistically significant (E=0.46, CI=0.18; 0.81]). This study provides strong evidence for a unitary hierarchical structure across different domains of emerging cognition. Evidence that a single common etiological factor, which we term infant g, contributes to a range of different abilities supports the view that in young infants, intrinsic and general neurodevelopmental processes are key drivers of observable behavioural differences in specific domains.
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4.
  • Hardiansyah, Irzam, et al. (author)
  • Global motion processing in infants’ visual cortex and the emergence of autism
  • 2023
  • In: Communications Biology. - : Springer Nature. - 2399-3642. ; 6:1
  • Journal article (peer-reviewed)abstract
    • Autism is a heritable and common neurodevelopmental condition, with behavioural symptoms typically emerging around age 2 to 3 years. Differences in basic perceptual processes have been documented in autistic children and adults. Specifically, data from many experiments suggest links between autism and alterations in global visual motion processing (i.e., when individual motion information is integrated to perceive an overall coherent pattern). Yet, no study has investigated whether a distinctive organization of global motion processing precede the emergence of autistic symptoms in early childhood. Here, using a validated infant electroencephalography (EEG) experimental paradigm, we first establish the normative activation profiles for global form, global motion, local form, and local motion in the visual cortex based on data from two samples of 5-month-old infants (total n = 473). Further, in a sample of 5-month-olds at elevated likelihood of autism (n = 52), we show that a different topographical organization of global motion processing is associated with autistic symptoms in toddlerhood. These findings advance the understanding of neural organization of infants’ basic visual processing, and its role in the development of autism.
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5.
  • Hosang, Georgina M., et al. (author)
  • Association of Genetic and Environmental Risks for Attention-Deficit/Hyperactivity Disorder with Hypomanic Symptoms in Youths
  • 2019
  • In: JAMA Psychiatry. - : American Medical Association (AMA). - 2168-622X .- 2168-6238. ; 76:11, s. 1150-1158
  • Journal article (peer-reviewed)abstract
    • All rights reserved. Importance: Attention-deficit/hyperactivity disorder (ADHD) and bipolar disorder are highly comorbid, with significantly associated symptoms. The mechanisms that account for their co-occurrence are not known. Objective: To examine the degree to which genetic and environmental risk factors for ADHD traits, across childhood and adolescence, are associated with adolescent hypomanic symptoms. Design, Setting, and Participants: This study used data on 13532 twin pairs from the Child and Adolescent Twin Study in Sweden, a prospective, longitudinal twin study. Their parents provided ADHD data when children were 9 or 12 years of age. Of those who reached 15 years of age, 3784 participated. Of those who reached 18 years of age, 3013 participated. The study was performed from December 20, 2017, to December 5, 2018. Data analysis was performed at the Department of Medical Epidemiology & Biostatistics, Karolinska Institutet, Stockholm, Sweden, from March 1, 2018, to October 31, 2018. Main Outcomes and Measures: Attention-deficit/hyperactivity disorder traits and hypomanic symptoms were assessed using parent-rated instruments. Associations between ADHD and adolescent hypomanic symptoms across childhood and adolescence were investigated using generalized estimating equations. Multivariate twin models were used to examine the extent to which genetic and environmental risk factors for ADHD were associated with hypomania. Results: Among 3784 15-year-old twin pairs and 3013 18-year-old twin pairs, ADHD and hypomanic symptoms were significantly associated (age 15 years: β = 0.30; 95% CI, 0.24-0.34; P <.001; age 18 years: β = 0.19; 95% CI, 0.16-0.22; P <.001), especially for the hyperactivity-impulsivity ADHD symptom domain (age 15 years: β = 0.53; 95% CI, 0.46-0.60; P <.001; age 18 years: β = 0.36; 95% CI, 0.30-0.42; P <.001) compared with the inattention domain (age 15 years: β = 0.40; 95% CI, 0.34-0.47; P <.001; age 18 years: β = 0.24; 95% CI, 0.19-0.29; P <.001). Between 13% and 29% of the genetic risk factors for hypomania were also associated with ADHD, with higher estimates detected for symptoms of hyperactivity-impulsivity (10%-25%) compared with inattention (6%-16%). Environmental factors played a negligible role in the associations. Genetic factors unique to adolescent hypomania were associated with 25% to 42% of its variance, suggesting some etiologic distinction between these forms of psychopathology. Conclusions and Relevance: More than a quarter of the genetic risk factors for adolescent hypomanic traits were also associated with ADHD symptoms in childhood and adolescence, with hypomania-specific genetic risk factors detected. These findings suggest that ADHD and hypomanic symptoms are associated with shared genetic factors, which should be the focus of further research..
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6.
  • Johansson, Robert, et al. (author)
  • Internet-based affect-focused psychodynamic therapy for social anxiety disorder : A randomized controlled trial with 2-year follow-up
  • 2017
  • In: Psychotherapy. - : American Psychological Association (APA). - 0033-3204 .- 1939-1536. ; 54:4, s. 351-360
  • Journal article (peer-reviewed)abstract
    • Social anxiety disorder (SAD) is associated with considerable individual suffering and societal costs. Although there is ample evidence for the efficacy of cognitive behavior therapy, recent studies suggest psychodynamic therapy may also be effective in treating SAD. Furthermore, Internet-based psychodynamic therapy (IPDT) has shown promising results for addressing mixed depression and anxiety disorders. However, no study has yet investigated the effects of IPDT specifically for SAD. This paper describes a randomized controlled trial testing the efficacy of a 10-week, affect-focused IPDT protocol for SAD, compared with a wait-list control group. Long-term effects were also estimated by collecting follow-up data, 6, 12, and 24 months after the end of therapy. A total of 72 individuals meeting diagnostic criteria for DSM–IV social anxiety disorder were included. The primary outcome was the self-report version of Liebowitz Social Anxiety Scale. Mixed model analyses using the full intention-to-treat sample revealed a significant interaction effect of group and time, suggesting a larger effect in the treatment group than in the wait-list control. A between-group effect size Cohen’s d = 1.05 (95% [CI]: [0.62, 1.53]) was observed at termination. Treatment gains were maintained at the 2-year follow-up, as symptom levels in the treated group continued to decrease significantly. The findings suggest that Internet-based affect-focused psychodynamic therapy is a promising treatment for social anxiety disorder.
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7.
  • Lange, Fredrik, et al. (author)
  • Omnichannel promotions and their effect on customer satisfaction
  • 2021
  • In: European Journal of Marketing. - : Emerald. - 1758-7123 .- 0309-0566. ; 55:13, s. 177-201
  • Journal article (peer-reviewed)abstract
    • Purpose: This paper aims to investigate whether customer satisfaction varies when presented with different types of omnichannel promotions (shopping goal-congruent vs shopping goal-incongruent and monetary vs non-monetary promotions) and if the effect on satisfaction is mediated by service excellence. In addition, this paper examines whether consumers respond differently to these promotions when shopping for utilitarian or hedonic products or when they have an inherent utilitarian or hedonic shopping motivation. Design/methodology/approach: Two online shopping scenario experiments are conducted. Study 1 (n = 1,034) differentiates effects of omnichannel promotions between hedonic and utilitarian product categories. Study 2 (n = 345) contrasts hedonic and utilitarian shopping motivation in the same product category. Findings: The findings in this paper demonstrate positive effects from both presenting a shopping goal congruent and a monetary promotion in an omnichannel setting on customer satisfaction. The positive effects are explained by service excellence and are demonstrated to be attenuated in the hedonic product category and for consumers with a hedonic shopping motivation. Research limitations/implications: The effect of omnichannel promotions was demonstrated using a scenario-based experimental approach, future research should use field experiments. Practical implications: The findings in this paper demonstrate practical implications for a retailer who wishes to optimize its omnichannel promotion strategy across channels and touchpoints. Originality/value: To date there is little directions for retailers on how to optimize their omnichannel promotion strategy. This paper contributes to research and practice by demonstrating that shopping goal-congruent promotions (vs in-congruent) and monetary promotions (vs non-monetary) increase customer satisfaction more in an omnichannel context. The effects are enhanced for utilitarian (vs hedonic) products/shopping motivation. © 2021, Angelica Blom, Fredrik Lange and Ronald L. Hess.
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8.
  • Lundström, Sebastian, et al. (author)
  • Trajectories leading to autism spectrum disorders are affected by paternal age: findings from two nationally representative twin studies.
  • 2010
  • In: Journal of Child Psychology and Psychiatry, and Allied Disciplines. - : Wiley. - 0021-9630 .- 1469-7610. ; 51:7, s. 850-856
  • Journal article (peer-reviewed)abstract
    • Background: Despite extensive efforts, the causes of autism remain unknown. Advancing paternal age has been associated with various neurodevelopmental disorders. We aim to investigate three unresolved questions: (a) What is the association between paternal age and autism spectrum disorders (ASD)?; (b) Does paternal age moderate the genetic and environmental etiological factors for ASD? (c) Does paternal age affect normal variation in autistic-like traits? Methods: Two nationally representative twin studies from Sweden (n = 11, 122, assessed at age 9 or 12) and the UK (n = 13, 524, assessed at age 9) were used. Categorical and continuous measures of ASD, autistic-like traits and autistic similarity were calculated and compared over paternal age categories. Results: Both cohorts showed a strong association between paternal age and the risk for ASD. A U-shaped risk association could be discerned since the offspring of both the youngest and oldest fathers showed an elevation in the risk for ASD. Autistic similarity increased with advancing paternal age in both monozygotic and dizygotic twins. Both cohorts showed significantly higher autistic-like traits in the offspring of the youngest and oldest fathers. Conclusions: Phenomena associated with paternal age are clearly involved in the trajectories leading to autistic-like traits and ASD. Mechanisms influencing the trajectories might differ between older and younger fathers. Molecular genetic studies are now needed in order to further understand the association between paternal age and ASD, as well as normal variation in social, language, and repetitive behaviors in the general population.
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9.
  • Picetti, Edoardo, et al. (author)
  • Early management of adult traumatic spinal cord injury in patients with polytrauma : a consensus and clinical recommendations jointly developed by the World Society of Emergency Surgery (WSES) & the European Association of Neurosurgical Societies (EANS)
  • 2024
  • In: World Journal of Emergency Surgery. - : BioMed Central (BMC). - 1749-7922. ; 19
  • Journal article (peer-reviewed)abstract
    • Background: The early management of polytrauma patients with traumatic spinal cord injury (tSCI) is a major challenge. Sparse data is available to provide optimal care in this scenario and worldwide variability in clinical practice has been documented in recent studies.Methods: A multidisciplinary consensus panel of physicians selected for their established clinical and scientific expertise in the acute management of tSCI polytrauma patients with different specializations was established. The World Society of Emergency Surgery (WSES) and the European Association of Neurosurgical Societies (EANS) endorsed the consensus, and a modified Delphi approach was adopted.Results: A total of 17 statements were proposed and discussed. A consensus was reached generating 17 recommendations (16 strong and 1 weak).Conclusions: This consensus provides practical recommendations to support a clinician's decision making in the management of tSCI polytrauma patients.
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10.
  • Portugal, Ana Maria, et al. (author)
  • Infants' looking preferences for social versus non-social objects reflect genetic variation
  • 2024
  • In: Nature Human Behaviour. - : Springer Nature. - 2397-3374. ; 8:1, s. 115-124
  • Journal article (peer-reviewed)abstract
    • To what extent do individual differences in infants’ early preference for faces versus non-facial objects reflect genetic and environmental factors? Here in a sample of 536 5-month-old same-sex twins, we assessed attention to faces using eye tracking in two ways: initial orienting to faces at the start of the trial (thought to reflect subcortical processing) and sustained face preference throughout the trial (thought to reflect emerging attention control). Twin model fitting suggested an influence of genetic and unique environmental effects, but there was no evidence for an effect of shared environment. The heritability of face orienting and preference were 0.19 (95% confidence interval (CI) 0.04 to 0.33) and 0.46 (95% CI 0.33 to 0.57), respectively. Face preference was associated positively with later parent-reported verbal competence (β = 0.14, 95% CI 0.03 to 0.25, P = 0.014, R2 = 0.018, N = 420). This study suggests that individual differences in young infants’ selection of perceptual input—social versus non-social—are heritable, providing a developmental perspective on gene–environment interplay occurring at the level of eye movements.
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Ronald, Angelica (12)
Taylor, Mark J. (6)
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