1. Questions
Many studies have explored the relationships between neighborhood attributes and residents’ satisfaction with the neighborhood and with life (Mouratidis and Yiannakou 2022; Cao 2016; Pfeiffer et al. 2020). However, few have examined the essential constituents of neighborhood satisfaction and life satisfaction simultaneously and illustrated the potentially different correlations with the same attributes. If true, a consequence is that when emphasizing only one satisfaction outcome, planners may devalue neighborhood attributes that affect the other.
We fill this research gap by answering the following research questions:
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Which neighborhood attributes are critical to neighborhood satisfaction and life satisfaction, respectively?
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How are neighborhood attributes associated differently with neighborhood satisfaction and life satisfaction?
2. Methods
This study uses survey data collected in six neighborhoods in the Twin Cities, USA (Figure 1), including 360 valid observations. In the survey, life satisfaction was measured using the Satisfaction with Life Scale (SWLS) developed by Diener et al. (1985), and the neighborhood was listed as one of the life domains for participants to evaluate (Table 1). We gauged neighborhood attributes by asking respondents to indicate their satisfaction with 31 attributes in five categories on a five-point Likert scale (See Table S1 in the supplement file). The sampling plan and survey administration can be found in Wu et al. (2019).
We employed the gradient boosting decision trees (GBDT) approach to analyze the correlations of neighborhood attributes with neighborhood satisfaction and life satisfaction. GBDT combines the results of multiple individual decision trees and reduces errors in the final model by correcting and learning from errors in each round of iterations. We carry out this algorithm using the “gbm” package in R (Ridgeway 2007). The main output of the GBDT models used in this study is relative influence, which refers to the increase in the squared error when an independent variable is excluded, relative to other predictors. It measures the relative contribution/importance of the independent variable to predict the dependent variable.
We built two GBDT models with neighborhood satisfaction and life satisfaction as dependent variables, respectively. In both models, independent variables included satisfaction with neighborhood attributes as well as socio-demographic variables (see Tables S2 and S3 in the supplement file).
3. Findings
In the neighborhood satisfaction model (Table 2), satisfaction with neighborhood attributes jointly accounts for almost 80% of the predictive power. Among the individual neighborhood attributes, the look of neighborhoods is the most impactful, with a relative influence of 17.83%. All the top four influential correlates of neighborhood satisfaction, “the look or design of the neighborhood”, “safety from crime in the neighborhood”, “neighborhood cleanliness”, and “noise in the neighborhood”, belong to the category of neighborhood characteristics in the survey. These influential variables describe the physical attributes of the neighborhood itself instead of the characteristics beyond the scope of the neighborhood (such as city services and availability of transportation options). This suggests that neighborhood satisfaction is predominantly associated with the features within the neighborhood, especially its appearance (look and design) and basic features (safety, cleanliness, and noise).
In the life satisfaction model, all the neighborhood attributes contributes to 52% of the power of predicting life satisfaction (Table 3). Individually, no attribute shows a dominant correlation with life satisfaction. When added together, accessibility-related variables show the strongest correlation (13.09%), followed by two individual attributes: the “ability to participate in neighborhood decisions that impact you/your family” and “parks and playgrounds in your neighborhood.” These correlates are related to the need for accessibility, social interaction, and leisure activities. Life satisfaction has substantial associations with a few socio-demographic variables. Income (19.7%), vehicle ownership (6.0%), and being white or not (8.5%) show considerable influences on life satisfaction.
The finding is consistent with the existing knowledge that life satisfaction is a complex construct affected by many domains of satisfaction besides the neighborhood, such as job satisfaction and marital satisfaction (Pavot and Diener 2008). With more factors coming into play, the effect of a single domain is limited[1]. The neighborhood is only one of the many aspects of people’s daily lives, thus having only a limited connection with life satisfaction. On the other hand, neighborhood satisfaction specifically evaluates the physical condition of the neighborhood, so it is highly correlated with neighborhood-related attributes. Socio-demographic characteristics also follow the same pattern. The most strongly-correlated socio-demographic variable in the neighborhood satisfaction mode is “years living in the neighborhood”, which is also highly correlated with residents’ experiences with the neighborhood itself. As for life satisfaction, the socio-demographic variables with the strongest correlations are income, vehicle ownership, and race. All three are less related to the neighborhood and more to personal wealth and defining characteristics.
Our findings substantiate the hypothesis implied by literature: life satisfaction and specific domain satisfactions react differently to the same environmental correlates. Because of the divergence, examining a single satisfaction outcome tells only part of a story. In particular, this study shows that investigating only neighborhood satisfaction will understate the role of attributes related to social interactions, leisure activities, and cognition in generating life satisfaction. By contrast, emphasizing only life satisfaction will regard basic features of residential neighborhoods as fruitless. In fact, all these attributes are important to residents’ subjective well-being. Therefore, future research should cover multiple satisfaction domains to illustrate the influences of neighborhood attributes in a holistic way.
Our previous findings show that the neighborhood as a whole contributes about 12.91% to life satisfaction after controlling for other domain satisfaction and socio-demographic variables.