The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform
Janis Baird - One of the best experts on this subject based on the ideXlab platform.
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Examination of how food environment and psychological factors interact in their relationship with dietary behaviours: test of a Cross-Sectional Model
International Journal of Behavioral Nutrition and Physical Activity, 2019Co-Authors: Christina Vogel, Georgia Ntani, Mary Barker, Kylie Ball, Gavin Abbott, Graham Moon, Cyrus Cooper, Janis BairdAbstract:BackgroundTo improve population diet environmental strategies have been hailed the panacea because they require little agency or investment of personal resources; this contrasts with conventional strategies that rely on individuals to engage high levels of agency and make deliberate choices. There is an immediate need to improve understanding of the synergy between the psychological and environmental determinants of diet in order to optimise allocation of precious public health resources. This study examined the synergistic and relative association between a number of food environment and psychological factors and the dietary behaviours of a population sample of women with young children.MethodsWomen in Hampshire were recruited from children’s centres and asked about their demographic characteristics, psychological resources, dietary behaviours (food frequency questionnaire) and perceptions of healthy food access and affordability. Three local food environment factors were objectively assessed: i) spatial access to food outlets using activity spaces; ii) healthfulness of the supermarket where women did their main food shop, (based on nine in-store factors including price, placement and promotion on seven healthy and five less healthy foods); iii) nutrition environment of children’s centres visited frequently by the women, assessed via staff-administered questionnaire. A theoretical Model linking environmental factors to dietary behaviours, both directly and indirectly through three factors representing individual agency (psychological resources, perceived food affordability, perceived food accessibility), was tested using Structural Equation Modelling.ResultsComplete data were available for 753 women. The environment of women’s main supermarket was indirectly related to their dietary behaviours through psychological resources and perceived food affordability. Shopping at supermarkets classified as having a healthier in-store environment was associated with having greater psychological resources associated with healthy eating (standardised regression weight β = 0.14SD, p = 0.03) and fewer food affordability concerns (β = − 0.14SD, p = 0.01), which in turn related to healthier dietary behaviours (β = 0.55SD, 0.3). The overall Model fit was good (CFI = 0.91, RMSEA = 0.05 [0.05, 0.06]).ConclusionsThis pathway analysis identified three focal points for intervention and suggests that high-agency interventions targeting individual psychological resources when combined with low-agency supermarket environment interventions may confer greater benefits on dietary behaviours than either intervention alone.
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Examination of how food environment and psychological factors interact in their relationship with dietary behaviours: test of a Cross-Sectional Model.
The international journal of behavioral nutrition and physical activity, 2019Co-Authors: Christina Vogel, Georgia Ntani, Mary Barker, Kylie Ball, Gavin Abbott, Graham Moon, Cyrus Cooper, Janis BairdAbstract:To improve population diet environmental strategies have been hailed the panacea because they require little agency or investment of personal resources; this contrasts with conventional strategies that rely on individuals to engage high levels of agency and make deliberate choices. There is an immediate need to improve understanding of the synergy between the psychological and environmental determinants of diet in order to optimise allocation of precious public health resources. This study examined the synergistic and relative association between a number of food environment and psychological factors and the dietary behaviours of a population sample of women with young children. Women in Hampshire were recruited from children's centres and asked about their demographic characteristics, psychological resources, dietary behaviours (food frequency questionnaire) and perceptions of healthy food access and affordability. Three local food environment factors were objectively assessed: i) spatial access to food outlets using activity spaces; ii) healthfulness of the supermarket where women did their main food shop, (based on nine in-store factors including price, placement and promotion on seven healthy and five less healthy foods); iii) nutrition environment of children's centres visited frequently by the women, assessed via staff-administered questionnaire. A theoretical Model linking environmental factors to dietary behaviours, both directly and indirectly through three factors representing individual agency (psychological resources, perceived food affordability, perceived food accessibility), was tested using Structural Equation Modelling. Complete data were available for 753 women. The environment of women's main supermarket was indirectly related to their dietary behaviours through psychological resources and perceived food affordability. Shopping at supermarkets classified as having a healthier in-store environment was associated with having greater psychological resources associated with healthy eating (standardised regression weight β = 0.14SD, p = 0.03) and fewer food affordability concerns (β = - 0.14SD, p = 0.01), which in turn related to healthier dietary behaviours (β = 0.55SD, < 0.001 and β = - 0.15, p = 0.01 respectively). The three food environment factors were not directly associated with dietary behaviour (p > 0.3). The overall Model fit was good (CFI = 0.91, RMSEA = 0.05 [0.05, 0.06]). This pathway analysis identified three focal points for intervention and suggests that high-agency interventions targeting individual psychological resources when combined with low-agency supermarket environment interventions may confer greater benefits on dietary behaviours than either intervention alone.
Colin Jones - One of the best experts on this subject based on the ideXlab platform.
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A Cross-Sectional Model of rents in urban retail centres
Journal of Property Research, 1999Co-Authors: Marie Robertson, Colin JonesAbstract:This paper sets out to assess the underlying influences on urban retail rents. A Cross-Sectional Model of retail rents is developed and tested for 29 Scottish towns in 1989 using regression analysis. A series of specific variables are constructed for these towns partly by reference to a gravity subModel. The Model attempts to assess the relative significance of demand in the form of local turnover and supply constraints, and demonstrate the role of business rates in the determination of urban retail rents. The results reveal the dominant influence of demand/turnover on local urban rents. The analysis also shows, through the improved explanatory power of the regression Model incorporating business rates, the role of the rent surplus theory in the determination of rents. Finally, the retail stock at the margin is also found to be a significant, if minor factor, in the determination of urban rents. There are difficulties in interpreting this in Cross-Sectional analysis, but it does, at least, indicate that d...
James B. Grace - One of the best experts on this subject based on the ideXlab platform.
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Structural equation Models of VMT growth in US urbanised areas
Urban Studies, 2014Co-Authors: Reid Ewing, Shima Hamidi, Frank Gallivan, Arthur C. Nelson, James B. GraceAbstract:Vehicle miles travelled (VMT) is a primary performance indicator for land use and transportation, bringing with it both positive and negative externalities. This study updates and refines previous work on VMT in urbanised areas, using recent data, additional metrics and structural equation Modelling (SEM). In a Cross-Sectional Model for 2010, population, income and freeway capacity are positively related to VMT, while gasoline prices, development density and transit service levels are negatively related. Findings of the Cross-Sectional Model are generally confirmed in a more tightly controlled longitudinal study of changes in VMT between 2000 and 2010, the first Model of its kind. The Cross-Sectional and longitudinal Models together, plus the transportation literature generally, give us a basis for generalising across studies to arrive at elasticity values of VMT with respect to different urban variables.
Christina Vogel - One of the best experts on this subject based on the ideXlab platform.
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Examination of how food environment and psychological factors interact in their relationship with dietary behaviours: test of a Cross-Sectional Model
International Journal of Behavioral Nutrition and Physical Activity, 2019Co-Authors: Christina Vogel, Georgia Ntani, Mary Barker, Kylie Ball, Gavin Abbott, Graham Moon, Cyrus Cooper, Janis BairdAbstract:BackgroundTo improve population diet environmental strategies have been hailed the panacea because they require little agency or investment of personal resources; this contrasts with conventional strategies that rely on individuals to engage high levels of agency and make deliberate choices. There is an immediate need to improve understanding of the synergy between the psychological and environmental determinants of diet in order to optimise allocation of precious public health resources. This study examined the synergistic and relative association between a number of food environment and psychological factors and the dietary behaviours of a population sample of women with young children.MethodsWomen in Hampshire were recruited from children’s centres and asked about their demographic characteristics, psychological resources, dietary behaviours (food frequency questionnaire) and perceptions of healthy food access and affordability. Three local food environment factors were objectively assessed: i) spatial access to food outlets using activity spaces; ii) healthfulness of the supermarket where women did their main food shop, (based on nine in-store factors including price, placement and promotion on seven healthy and five less healthy foods); iii) nutrition environment of children’s centres visited frequently by the women, assessed via staff-administered questionnaire. A theoretical Model linking environmental factors to dietary behaviours, both directly and indirectly through three factors representing individual agency (psychological resources, perceived food affordability, perceived food accessibility), was tested using Structural Equation Modelling.ResultsComplete data were available for 753 women. The environment of women’s main supermarket was indirectly related to their dietary behaviours through psychological resources and perceived food affordability. Shopping at supermarkets classified as having a healthier in-store environment was associated with having greater psychological resources associated with healthy eating (standardised regression weight β = 0.14SD, p = 0.03) and fewer food affordability concerns (β = − 0.14SD, p = 0.01), which in turn related to healthier dietary behaviours (β = 0.55SD, 0.3). The overall Model fit was good (CFI = 0.91, RMSEA = 0.05 [0.05, 0.06]).ConclusionsThis pathway analysis identified three focal points for intervention and suggests that high-agency interventions targeting individual psychological resources when combined with low-agency supermarket environment interventions may confer greater benefits on dietary behaviours than either intervention alone.
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Examination of how food environment and psychological factors interact in their relationship with dietary behaviours: test of a Cross-Sectional Model.
The international journal of behavioral nutrition and physical activity, 2019Co-Authors: Christina Vogel, Georgia Ntani, Mary Barker, Kylie Ball, Gavin Abbott, Graham Moon, Cyrus Cooper, Janis BairdAbstract:To improve population diet environmental strategies have been hailed the panacea because they require little agency or investment of personal resources; this contrasts with conventional strategies that rely on individuals to engage high levels of agency and make deliberate choices. There is an immediate need to improve understanding of the synergy between the psychological and environmental determinants of diet in order to optimise allocation of precious public health resources. This study examined the synergistic and relative association between a number of food environment and psychological factors and the dietary behaviours of a population sample of women with young children. Women in Hampshire were recruited from children's centres and asked about their demographic characteristics, psychological resources, dietary behaviours (food frequency questionnaire) and perceptions of healthy food access and affordability. Three local food environment factors were objectively assessed: i) spatial access to food outlets using activity spaces; ii) healthfulness of the supermarket where women did their main food shop, (based on nine in-store factors including price, placement and promotion on seven healthy and five less healthy foods); iii) nutrition environment of children's centres visited frequently by the women, assessed via staff-administered questionnaire. A theoretical Model linking environmental factors to dietary behaviours, both directly and indirectly through three factors representing individual agency (psychological resources, perceived food affordability, perceived food accessibility), was tested using Structural Equation Modelling. Complete data were available for 753 women. The environment of women's main supermarket was indirectly related to their dietary behaviours through psychological resources and perceived food affordability. Shopping at supermarkets classified as having a healthier in-store environment was associated with having greater psychological resources associated with healthy eating (standardised regression weight β = 0.14SD, p = 0.03) and fewer food affordability concerns (β = - 0.14SD, p = 0.01), which in turn related to healthier dietary behaviours (β = 0.55SD, < 0.001 and β = - 0.15, p = 0.01 respectively). The three food environment factors were not directly associated with dietary behaviour (p > 0.3). The overall Model fit was good (CFI = 0.91, RMSEA = 0.05 [0.05, 0.06]). This pathway analysis identified three focal points for intervention and suggests that high-agency interventions targeting individual psychological resources when combined with low-agency supermarket environment interventions may confer greater benefits on dietary behaviours than either intervention alone.
Agna A. Bartels-velthuis - One of the best experts on this subject based on the ideXlab platform.
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Longitudinal evidence for a relation between depressive symptoms and quality of life in schizophrenia using structural equation Modeling
Schizophrenia research, 2019Co-Authors: Geeske Van Rooijen, Maaike Van Rooijen, Arija Maat, Jentien M Vermeulen, Carin J. Meijer, Henricus G. Ruhé, Lieuwe De Haan, Genetic Risk, Behrooz Z. Alizadeh, Agna A. Bartels-velthuisAbstract:Patients diagnosed with schizophrenia often report a low quality of life (QoL). The purpose of this study was to investigate whether we could replicate a Cross-Sectional Model by Alessandrini et al. (2016, n = 271) and whether this Model predicts QoL later in life. This Model showed strong associations between schizophrenia spectrum symptoms and depressive symptoms on QoL, but lacked follow-up assessment. This Model was adapted in the current study and the robustness was investigated by using a longitudinal design in which the association between baseline variables (including IQ, depression, schizophrenia spectrum symptoms as well as social functioning) and QoL during 3-years of follow-up was investigated. We included patients with a non-affective psychotic disorder (n = 744) from a prospective naturalistic cohort-study. In the Cross-Sectional Model, with good measure of fit, both depression as well as social functioning was associated with QoL (direct path coefficient -0.28 and 0.41, respectively). Additionally, the severity of schizophrenia spectrum symptoms was highly associated with social functioning (direct path coefficient -0.70). Importantly, the longitudinal Model showed good measures of fit, which strengthens the validity of the initial Model and highlights that depression prospectively affect QoL while schizophrenia spectrum symptoms prospectively influence QoL via social functioning. The negative, longitudinal impact of a depression on QoL highlights the need to focus on treatment of this co-morbidity.