Comparison of two strategies for analysis of variance in nonorthogonal designs.

Overall, John E.; Lee, Dennis M.; Hornick, Chris W.

doi:10.1037/0033-2909.90.2.367

Cited by 25 publications

(10 citation statements)

References 11 publications

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“…However, Hays (1983) argued that it is inappropriate to interpret main effects in the presence of a statistically significant interaction effect. Others, on the other hand, argue that main effects are meaningful in the presence of significant interactions, when interpreted as the average effect of an independent variable on a dependent variable (e.g., Overall, Lee, & Hornik, 1981). In line with de Lange et al, we will study both main and interaction effects, the latter interpreted as the average effect of an independent variable on a dependent variable.…”

Section: Introductionmentioning

confidence: 73%

Burnout among nurses: Extending the Job Demand-Control-Support model with work-home interference

Proost¹,

Witte²,

Witte³

et al. 2004

PSYCHOL BELG

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One of the leading models on antecedents of subjective well-being and stress at work is the job Demand-Control-Support model. Be it to a lesser extent, this model has also been applied to the study of burnout. In this study we tried to extend this model with work-home interference, which can be considered an additional stressor. 2075 Belgian nurses divided over 14 hospitals participated in this study. The results of hierarchical regression analyses showed a strong additional effect of work-home interference on each of the three dimensions of burnout, after controlling for the dimensions of the job Demand-ControlSupport model. However, mediational analyses showed that the effect of workhome interference on depersonalization was partly mediated by emotional exhaustion and that the effect on personal accomplishment was partly mediated by emotional exhaustion and depersonalization.

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Section: Introductionmentioning

confidence: 73%

Burnout among nurses: Extending the Job Demand-Control-Support model with work-home interference

Proost¹,

Witte²,

Witte³

et al. 2004

PSYCHOL BELG

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show abstract

“…A Type III (i.e. unique) sum-of-squares approach was used for the analyses due to unequal cell sizes in the design (Hays, 1988;Overall, Lee, & Hornick, 1981;Overall & Spiegel, 1969). Simple effects and simple comparison tests were used to further investigate any significant interaction effects (Keppel, 1982;Myers, 1979;Winer, 1971).…”

Section: Discussionmentioning

confidence: 99%

A Longitudinal Study of the Impact on Young Children of Maternal HIV Serostatus Disclosure

Murphy

Marelich

Hoffman

2002

Clin Child Psychol Psychiatry

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A B S T R A C TA longitudinal analysis of the psychological well-being of 81 young children ages 6-11 living with their HIV symptomatic or AIDS diagnosed mothers was conducted. Specifically, the relationship among mothers' disease severity, maternal disclosure of HIV, and children's psychological well-being was investigated. The children were assessed over three time points (i.e. baseline assessment, 6-month and 1-year follow-up). Two categories of maternal disclosure (disclosed before baseline, no disclosure at any of the three time points over 1-year), and two categories of disease severity (< 500 T-cell count across all assessments, 500+) were created. A series of 2 ϫ 2 ϫ 3 repeated measures MANOVAs was used to assess the effects of the maternal disclosure and disease severity across time on children's psychological well-being. Results showed significant within-group time effects for child depression, suggesting a decrease in depression over time. Interaction results of time and maternal disclosure revealed only a few significant changes over time. However, significant decreases over time for child depression were noted among children whose mothers' CD4 cell counts remained at 500+ across the three assessment periods. Implications for future research and for psychosocial needs of these families are discussed. K E Y W O R D SHIV, longitudinal analysis, maternal disclosure, psychological well-being

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“…We include the rim characteristics × food size interaction term in the primary analysis model, to obtain an unbiased estimate of the main effect of rim characteristics, as recommended in the statistical literature (32-35). The interaction between rim characteristic and depicted food portion size tested whether the probability of picking the test stimulus (i.e.…”

Section: Methods and Proceduresmentioning

confidence: 99%

“…Multi-level logistic regression examined the main effect of rim characteristic on the probability of choosing a depicted food size compared to the standard stimulus across rim characteristics, adjusting for the fixed effects of depicted test stimulus food size, food type, the rim characteristics by food size interaction, and a random effect for within person variation. We include the rim characteristics × food size interaction term in the primary analysis model, to obtain an unbiased estimate of the main effect of rim characteristics, as recommended in the statistical literature ( 32 - 35 ). The interaction between rim characteristic and depicted food portion size tested whether the probability of picking the test stimulus (i.e.…”

Section: Methods and Proceduresmentioning

confidence: 99%

Visual illusions and plate design: the effects of plate rim widths and rim coloring on perceived food portion size

et al. 2013

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OBJECTIVEThe Delboeuf Illusion affects perceptions of the relative sizes of concentric shapes. This study was designed to extend research on the application of the Delboeuf illusion to food on a plate by testing whether a plate’s rim width and coloring influence perceptual bias to affect perceived food portion size.DESIGN AND METHODSWithin-subjects experimental design. Experiment 1 tested the effect of rim width on perceived food portion size. Experiment 2 tested the effect of rim coloring on perceived food portion size. In both experiments, participants observed a series of photographic images of paired, side-by-side plates varying in designs and amounts of food. From each pair, participants were asked to select the plate that contained more food. Multi-level logistic regression examined the effects of rim width and coloring on perceived food portion size.RESULTSExperiment 1: Participants overestimated the diameter of food portions by 5% and the visual area of food portions by 10% on plates with wider rims compared to plates with very thin rims (P<0.0001). The effect of rim width was greater with larger food portion sizes. Experiment 2: Participants overestimated the diameter of food portions by 1.5% and the visual area of food portions by 3% on plates with rim coloring compared to plates with no coloring (P=0.01). The effect of rim coloring was greater with smaller food portion sizes.CONCLUSIONThe Delboeuf illusion applies to food on a plate. Participants overestimated food portion size on plates with wider and colored rims. These findings may help design plates to influence perceptions of food portion sizes.

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Comparison of two strategies for analysis of variance in nonorthogonal designs.

Cited by 25 publications

References 11 publications

Burnout among nurses: Extending the Job Demand-Control-Support model with work-home interference

Burnout among nurses: Extending the Job Demand-Control-Support model with work-home interference

A Longitudinal Study of the Impact on Young Children of Maternal HIV Serostatus Disclosure

Visual illusions and plate design: the effects of plate rim widths and rim coloring on perceived food portion size

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