Low Income Amplifies the Negative Relationship Between Nostalgia Proneness and Well-Being

Nostalgia is a sentimental longing for the past that can influence people’s well-being. How this mixed emotion influences well-being may depend on current life circumstances. Nostalgia elicited in negative contexts could be particularly harmful to people’s well-being, whereas nostalgia elicited in positive contexts may not be as detrimental. This hypothesis was tested at the level of individual differences with a nationally representative sample of Americans (N = 6,732) who completed measures of nostalgia proneness and several indicators of well-being. Income was measured as an objective indicator of current life circumstances. Results showed that nostalgia proneness was negatively related to well-being, and income was positively related to well-being. Importantly, these relationships were moderated such that the negative relationships between nostalgia and well-being were stronger among members of low income households than among members of high income households. Consistent with the hypothesis, nostalgia proneness was particularly detrimental to well-being under objectively less desirable circumstances. These findings support an emerging body of research that contends that the effect of nostalgia on well-being depends on the context in which nostalgia is elicited. Supplementary information The online version contains supplementary material available at 10.1007/s11482-022-10066-8.

vary in valence as well. Although all nostalgic feelings are somewhat bittersweet, some nostalgic feelings may be relatively more sweet than others, whereas other nostalgic feelings might be relatively more bitter than others . For example, a group of close friends reminiscing about the good old days of their childhood would elicit feelings of nostalgia. Likewise, an individual sitting alone while reflecting on better days would also feel rather nostalgic. Clearly, these nostalgic feelings differ considerably.
Nostalgic feelings can be elicited in a variety of contexts. Some of these contexts are relatively positive, such as interacting with friends or listening to music or singing (Nash, 2012;Routledge et al., 2011). Other situations that may elicit nostalgia are relatively negative, such as social exclusion, boredom at work, and feelings of meaninglessness (Routledge et al., 2008;Seehusen et al., 2013;van Tilburg et al., 2013;Wildschut et al., 2010). The valence of the situation can influence how positive or negative the nostalgic feeling is, which can subsequently influence well-being in divergent ways . For example, daily nostalgic feelings were more negatively associated with well-being on days as they felt higher levels of loneliness . Presumably, nostalgia elicited from lonely states had a more negative effect on well-being than nostalgia elicited in contexts in which people did not feel as lonely.
In the present research, I aim to test this theory at an individual difference level of analysis. In addition to within-person variation in nostalgia (e.g., someone might feel nostalgic in one situation but not during another), nostalgia may vary between persons as well (e.g., some people may feel nostalgic more frequently or intensely than others on average). Individual differences in nostalgia are often termed nostalgia proneness and have been measured in a variety of ways. Well-being was conceptualized as having three aspects: how people evaluate their satisfaction with life (evaluative well-being), how people experience their emotions in daily life (experiential well-being), and how meaningful and purposeful people find their lives (eudaimonic well-being). (See Kahneman 1999;Schwarz & Strack, 1999;Steptoe et al., 2015 for discussions.) How frequently and/or intensely people feel nostalgic may influence well-being (Muise et al., 2020;. Moreover, the influence of nostalgia proneness on well-being may vary depending on people's current life situation. One indicator that is often used to assess people's current situation in a fairly objective manner is income (e.g., Cummins 2000;Deaton, 2008). Money can provide the resources for many needs and benefits, such as access to healthcare and the ability to provide for one's family. It can also instill a sense of perceived control over life's uncertainties (Johnson & Krueger, 2006;Kraus et al., 2012;Lachman & Weaver, 1998). When lower income individuals feel a loss of control, they may engage in nostalgic reflections as a means to escape the present reality. This type of bitter nostalgic feeling may lead to lower well-being as it could create a contrast between a better past and the negative present. Moreover, the differing degrees of perceived control that stem from different levels of socioeconomic status can influence the types of emotions people experience (Piff & Moskowitz, 2018;Tong et al., 2021). For instance, members of higher income households report higher levels of positive self-regard emotions like pride, contentment, and confidence, and lower levels negative self-regard emotions 1 3 like sadness, fear, and shame . These feelings could influence the types of nostalgic feelings that are typically elicited and could have downstream consequences on their well-being. Of course, it is difficult to measure the different types (i.e., the valence) of nostalgic feelings in person-level measures that require extensive recall, but the theory can nevertheless be tested through the examination of the interactive effects of income on the relationships between nostalgia proneness and well-being.
In light of the prior literature, I hypothesize that the relationship between nostalgia proneness and well-being will be more strongly negative (i.e., more detrimental) at lower levels of income than at higher levels of income. Nostalgic feelings among lower income earners are likely relatively more bitter than sweet compared to nostalgic feelings among higher income earners. Among higher income households, nostalgic feelings may bring to mind positive memories that remind them of the positive aspects of life.
In addition to testing this theory, the secondary goal of the present research is to examine demographic differences in nostalgia proneness. For example, do men and women differ in nostalgia proneness? Do older adults report greater nostalgia than younger adults? Do levels of nostalgia vary by race or ethnicity? Given the advantages of analyzing data from a large, nationally representative sample, it seems valuable to present demographic differences in nostalgia proneness. The latter analyses were relatively exploratory in nature.

Participants and Procedure
The sample consisted of participants from the Understanding America Study (https:// uasdata.usc.edu), a nationally representative internet panel conducted by the Center for Economic and Social Research (CESR) at the University of Southern California. CESR recruited participants based on various demographics of all household addresses in the US used by Marketing Systems Groups. In this sample, participants without an internet connection were provided with internet-connected tablets to ensure a full coverage of the US population. Participants were given the opportunity to complete multiple questionnaires that have been distributed several times over the year, beginning in 2014. They were financially compensated for each questionnaire completed, and they completed an informed consent prior to participation.
As is fairly common practice in panel data, participants completed some of the measures at different times (e.g., Abakoumkin et al., 2020;Napier & Jost, 2008;Wojcik et al., 2015). The measures of interest for this study were completed primarily during two distributions. Questions about satisfaction with life, positive affect, and negative affect were completed between September 2014 and July 2018. Questions about nostalgia and meaning in life were completed between December 2019 and February 2020. To rule out any potential critiques concerning the fact that some of the well-being variables were measured prior to nostalgia and meaning in life, I also examined the relationships between nostalgia and satisfaction with life with a differ-ent measure of satisfaction with life that was administered between February 2021 and April 2021, at least 12 months after the completion of the measures of nostalgia and meaning in life.
Because the analyses focused on nostalgia, demographics completed at the same time as nostalgia were used. Questions about nostalgia, meaning in life, and demographics were answered by 6,732 (M age = 49.84, SD = 16.16; 58.73% female) participants (see Table 1 for full descriptive statistics). The response rate was 80.68%. Of the 6,732 participants who completed measures of nostalgia, 4,265 participants completed measures of satisfaction with life, positive affect, and negative affect. The response rate for the questionnaire that included measures of satisfaction with life, positive affect, and negative affect was 90.92%. The additional measure of satisfaction with life was completed by 5,798 people who also completed measures of nostalgia. The response rate was 81.00%.
Analyses were conducted with as many participants as possible. Because the number of participants who completed nostalgia and meaning in life was larger than those who also completed satisfaction with life and affect, additional analyses were conducted on the smaller subset of participants who completed all measures. Those analyses did not differ substantively from the analyses involving all participants and are presented in Supplemental Materials. The sample size was determined based on

Measures
As is typical in panel studies, several of the constructs were measured with singleitems or abbreviated versions of lengthier scales. An advantage of single-items or abbreviated measures is that they minimize participant burden, which is a serious concern in these types of studies. Prior research has shown that single item measures tend to perform just as adequately as their corresponding lengthier measures (Cheung & Lucas, 2014;Gardner et al., 1998;Robins et al., 2001). Nostalgia proneness was assessed with two items from the Personal Inventory of Nostalgic Experiences (PINE) scale . The PINE scale has received rigorous psychometric testing, including model fit from confirmatory factor analyses, test-retest reliability, and measurement invariance over time. Before answering the questions about nostalgia, participants were presented with a definition of nostalgia: "According to the Oxford Dictionary, nostalgia is defined as a 'sentimental longing for the past.'" The two items from the PINE scale were, "How nostalgic do you feel in general?" and "Thinking about your life in general, how much do you feel sentimental for the past?" Responses were reported on a 7-point scale (1 = do not feel this way at all, 4 = feel this way moderately, 7 = feel this way very much; α = 0.87).
Meaning in life was measured with a single item ("My life has a clear sense of purpose or meaning") that was adapted from the Meaning in Life Questionnaire (Steger et al., 2006). Responses were reported on a 7-point scale (1 = absolutely untrue, 7 = absolutely true). Questions from the Meaning in Life Questionnaire have demonstrated reasonable levels of reliability over time (Steger & Kashdan, 2007).
Satisfaction with life was measured with a single item ("Overall, how satisfied are you with your life?"). Similarly worded single-item measures have been used to measure satisfaction with life in various panel studies, such as the World Values Survey. Responses were reported on a 10-point scale (1 = Not at all, 10 = Completely). Global evaluations of satisfaction with life have demonstrated high levels of reliability and stability over time (Anusic & Schimmack, 2016;Schimmack & Oishi, 2005). The additional measure completed in 2021 was the 5-item Satisfaction with Life Scale (α = 0.90; Diener et al., 1985).
To assess positive and negative affect, participants were asked to reflect on their day yesterday. Specifically, they were asked, "What did you do yesterday and how did you feel? To begin, please tell us what time you woke up yesterday." A series of questions followed that asked about their feelings. "Yesterday, did you feel [adjective]? Would you say:" with response reported on a 10-point scale (1 = Did not experience this feeling at all, 10 = Feeling was extremely strong). Positive affect was assessed with the following adjectives: happy, enthusiastic, and content; negative affect was assessed with the following adjectives: angry, frustrated, sad, stressed, lonely, wor-ried, and bored. Positive and negative affect demonstrated reasonable reliabilities, αs = 0.91 and 0.86, respectively. Similar to global evaluations of life satisfaction, measures of positive and negative affect have demonstrated reasonably high levels of stability over time (Hudson et al., 2017). Although life satisfaction and affect were measured at a different time than the other measures, the high levels of stability of these global evaluations demonstrate they can be usefully integrated with measures collected more recently. See Nezlek (2021) and Abakoumkin et al., (2020) for similar procedures.

Preliminary analyses
Before testing the primary hypothesis, I present descriptive statistics for two purposes. The first is to document demographic differences in nostalgia proneness as this is the first nationally representative sample of Americans to complete a nostalgia proneness measure 1 . The second purpose is to provide convergent validity of our single-item and abbreviated scales.
Descriptive statistics and demographic differences in nostalgia proneness are documented in Table 1 To provide support for convergent validity, correlations between nostalgia, wellbeing, and all continuous demographic variables (age, income, and education) are presented in Table 2. Nostalgia proneness was negatively related to satisfaction with life, meaning in life, and positive affect and was positively related to negative affect, consistent with correlations documented by Newman et al., (2020, Study 2) that used longer versions of each measure. 2 The single-item measure of meaning in life was positively related to satisfaction with life and positive affect and was negatively related to negative affect, consistent with studies that have used longer versions of these measures (e.g., Newman et al., 2018;Steger et al., 2006). Meaning in life was also positively related to age and income, consistent with prior research (e.g., Steger et al., 2009;Ward & King, 2016). Thus, our abbreviated measures demonstrated adequate convergence validity.

Primary analyses
The primary analyses addressed an interaction effect of nostalgia and income on wellbeing. Is the relationship between nostalgia proneness and well-being moderated by income? To answer this question, I examined two main effects of nostalgia on wellbeing and income on well-being before testing the interaction. I used ordinary least squares regression in R and standardized all continuous predictors and outcomes. The analytic syntax is available at OSF: https://osf.io/vpdm3/.
In separate models, each well-being variable was regressed on nostalgia and age, gender, education, income, and race/ethnicity.  2) were not significantly different from zero but were trending in the negative direction. 3 A common analysis in the mixed emotions literature is to control for the effects of positive and negative affect. After controlling for positive and negative affect when satisfaction and meaning were regressed on nostalgia and demographic controls, nostalgia was still negatively related to satisfaction and meaning. This suggests that the predictive role of nostalgia on well-being cannot be solely attributed to one particular valence. See Supplemental Materials for details. Critically, interaction effects were tested by including nostalgia, income, and an interaction term along with demographic controls as predictors. Interaction terms were   1 Interactive effects of nostalgia and income on well-being. Note: Dashed lines indicate the figures are zoomed in to more easily display the direction of the relationships. The negative relationships between nostalgia and well-being are stronger among lower income households than among higher income households nostalgia and well-being was stronger among lower income households than among higher income households, as depicted in Fig. 1. When viewed alternatively, the positive relationship between income and well-being was stronger among those high in nostalgia proneness than among those low in nostalgia proneness.
The interaction analysis that used the Satisfaction with Life Scale (Diener et al., 1985) completed after nostalgia replicated those with the measure of satisfaction with life completed prior to nostalgia, B = 0.11, 95% CI [0.02, 0.20], t = 2.51, p = .012. (See Supplemental Materials for additional details.) Thus, the analyses were robust across different measures of well-being completed at different times.

Discussion
The present study served exploratory and confirmatory research agendas: documenting demographic differences in nostalgia proneness and testing a theory that argues that the relationship between nostalgia proneness and well-being is context dependent. As this dataset is the first nationally representative sample of Americans to assess nostalgia proneness, documenting demographic differences is important for generating hypotheses for future research. There were no gender differences in nostalgia proneness. Those over age 65 reported lower nostalgia than those younger than 65. Highly educated individuals reported lower nostalgia than the less well educated, but income was not associated with nostalgia. Among the different races and ethnicities represented in the dataset, Non-Hispanic Asian participants reported the highest levels of nostalgia while Non-Hispanic Black participants reported the lowest levels.
The key purpose of this research was to test a theory about contextual effects of nostalgia proneness on well-being (e.g., Newman & Sachs 2020). Under favorable conditions, nostalgia may be relatively more sweet than bitter and may subsequently predict greater well-being. In contrast, when life is not going well, nostalgic feelings may be characterized as relatively more bitter than sweet and could predict lower well-being. In a similar vein, the within-person relationships between daily nostalgic states and well-being were more strongly negative when people felt lonely than when they did not feel as lonely .
The present findings provide additional support for this theory by demonstrating that the negative relationships between nostalgia proneness and well-being were significantly stronger among lower income households. Presumably, nostalgic feelings among lower income households are elicited in less favorable situations or circumstances compared to higher income households. The contextual effects of income levels can subsequently predict well-being.
Before discussing implications and future directions, it is important to note that the findings and theory appear at first glance to contrast with research that has suggested that nostalgia can be used as a buffer against negative experiences (Sedikides et al., 2015). For instance, following the death of a loved one, individual differences in nostalgia predicted less intrusive thoughts over a one month period (Reid et al., 2021). In a different study among Syrian refugees, recalling their most nostalgic feeling increased certain positive emotions, self-continuity, meaning in life, self-esteem, and social connectedness compared to reflections of an ordinary experience (Wildschut et al., 2019). These findings suggest that nostalgia can serve a palliative function by alleviating the negative effects of dire situations.
To reconcile the apparent discrepancies between prior research and the present findings, it is important to consider methodological and theoretical factors. The studies that have documented palliative effects of nostalgia proneness (i.e., measured as an individual difference) have primarily relied on the Southampton Nostalgia Scale (SNS; Barrett et al., 2010) whereas the present study relied on the Personal Inventory of Nostalgic Experiences (PINE; Newman et al., 2020) Scale. The SNS confounds nostalgia proneness with nostalgia seeking or valuing nostalgia, a component closely linked to approach motivation . In contrast, the items from the PINE Scale are motivationally neutral. This suggests that the act of valuing or seeking nostalgia could serve as a buffer against negative experiences, whereas the tendency to simply feel nostalgic may not. In other studies, participants are specifically asked to engage in the recollection of a very nostalgic experience, which tends to have positive effects (Sedikides et al., 2015). Similar to clinical trials or interventions, the reflection of a specific, highly nostalgic feeling may have certain benefits that can alleviate negative effects. Thus, whereas prior research has demonstrated that nostalgia may have beneficial effects in certain negative circumstances, the present study shows that nostalgia proneness measured in a motivationally neutral manner is particularly negatively related to well-being. The present study does not negate or contradict prior research. Rather, the present study addresses a unique question.
In addition to the contextual effects of nostalgia on well-being, the present study augments our understanding of the potential effects of income on well-being. The positive relationships between income and various well-being measures replicate previous research that has measured these constructs at the level of individual differences (e.g., Diener et al., 2010;Kahneman & Deaton, 2010;Ward & King, 2016). The present findings also show that not only does income relate positively to wellbeing, but the relationship is stronger among people high in nostalgia proneness. That is, income seems to more strongly predict well-being among people who tend to feel highly nostalgic than among people who feel less nostalgic.
Interpreted in an alternative manner, the results could suggest that income serves as a buffer against the negative effects of nostalgia. Higher levels of income are associated with a sense of freedom, control, and choice (Kraus et al., 2012), which means that income could allow people to engage in nostalgic thoughts when it is convenient and somewhat beneficial. Lower income individuals tend to engage with their environment because they need to manage threats and external constraints (Kraus et al., 2009), and this could mean they are forced to engage in nostalgic feelings during inopportune moments when it could be particularly detrimental to their well-being. Additionally, income could provide the resources to alleviate the pains associated with nostalgia. For example, the sadness that accompanies a nostalgic feeling for a childhood friend who lives far away could be offset among those who have the financial resources to afford a trip to visit the childhood friend, thus improving one's well-being. Admittedly speculative, this possibility requires studies designed to test such processes. Nevertheless, the current research provides a nuanced understanding of how the effect of income on well-being varies as a function of nostalgia proneness.
The present research has implications beyond nostalgia for mixed emotions more broadly. Recent research has documented a range of consequences of mixed emotional experiences. For instance, mixed emotions predict a higher likelihood of engaging in preventative health behaviors during the Covid-19 pandemic  and can attenuate declines in physical health (Hershfield et al., 2013). Mixed emotions have also predicted greater eudaimonic well-being (Berrios et al., 2018) and improved psychological well-being (Adler & Hershfield, 2012). In contrast, other studies have shown that mixed emotions predict lower well-being roughly ten years later (Oh, 2022). People who experience high levels of mixed emotions in daily life also tend to report high levels of neuroticism (Barford et al., 2020), which is negatively associated with well-being. Although the present results do not clarify these inconsistent findings, they could point to potential explanations for these discrepancies by emphasizing the importance of moderating factors. Just as income moderated the relationship between nostalgia proneness and well-being, other moderating factors could point to reasons why mixed emotions may be beneficial in certain contexts and harmful in others.

Limitations and future directions
A few limitations and directions for future research are worth noting. Similar to panel studies with measures assessed at different times, some of the well-being measures in the present study were administered prior to nostalgia, whereas others were measured at the same time or after nostalgia. Outcome measures are ideally assessed after predictors; this limitation was addressed by analyses that showed that the pattern of results remained the same across all well-being outcomes measured at different times. More importantly though, given the cross-sectional and correlational nature of the data, causal claims cannot be made. Although the data are consistent with a model that involves causal processes, the correlations could be interpreted differently. It is possible that well-being might cause people to feel more or less nostalgic over time, and well-being and nostalgia could potentially influence people's income. As income is difficult to manipulate (as are individual differences), longitudinal studies would be necessary to examine lagged processes over time. Longitudinal studies would also be valuable in teasing apart cohort effects or factors pertaining specifically to major world events, such as the Covid-19 pandemic. Because the interaction effects were similar for both satisfaction with life measures which were measured before and after the onset of the Covid-19 pandemic, it suggests the findings may be robust across such contexts, but additional research would be needed. Additionally, the exact mechanisms explaining why nostalgia elicited among members of lower income households is negatively related to well-being are difficult to discern in crosssectional data. Nostalgia elicited in negative situations may make the negative aspects associated with nostalgic feelings quite salient or they may remind people that their current situation is not as rosy as their remembered past (Iyer & Jetten, 2011;Osborn et al., 2020). Future research is necessary is examine the precise mechanisms.
As is common practice in panel studies, some of the measures were assessed with one or two items. Although abbreviated scales often converge with results from lengthier corresponding scales as was documented in these data, single item scales may not capture the complex facets of a construct. For instance, recent work has suggested that meaning in life is a higher order factor that consists of three facets: purpose, coherence, and significance (George & Park, 2016;Martela & Steger, 2016). Future research could examine how nostalgia and income influence specific facets of well-being in differential ways. Relatedly, the present study included two items that assessed personal nostalgia. Recent work has shown that personal nostalgia and collective nostalgia may have divergent effects on attitudes and prejudice (Behler et al., 2021;Wohl et al., 2020). It would be fruitful to examine the effects of income and different forms of nostalgia (e.g., collective nostalgia, anticipatory nostalgia; Batcho 2020; Batcho & Shikh, 2016) on well-being in future research.

Summary
In conclusion, nostalgia proneness is negatively related to well-being, but this relationship is context sensitive. The strength of this association may vary depending on people's current life circumstances. The negative relationship between nostalgia proneness and well-being is amplified among members of lower income households. Although correlational, these findings are consistent with a process model that shows that nostalgia elicited in negative situations can have particularly detrimental effects on well-being.

Open Practices Statement
The data are available at https://uasdata.usc.edu/UAS-212 to the public and the analytic syntax is available at the OSF (https://osf.io/vpdm3/) for the purpose of verification of the results presented in this manuscript. The analyses were not formally preregistered.