Private households play a relevant role in reducing CO2 emissions, but it remains unclear whether and which psychological factors are related to emissions. Given the relevance of income as a general driver of consumption and CO2 emissions, it seems particularly important to investigate how income and psychological variables interact. In two studies (a convenience sample from a city in Saxony Anhalt with N = 642 participants and a representative sample from Saxony Anhalt with N = 300 participants), we investigated the moderating role of household income in correlations between motivational variables (biospheric value orientation, personal norm to protect the climate, and sufficiency orientation) and intentions to engage in three types of environmentally relevant behaviours (curtailment behaviours, efficiency behaviours, and political behaviours). Results showed that motivational factors were correlated with all three behavioural domains. High- and low-income households differed significantly in correlations between motivational factors and efficiency intentions. As expected, correlations between motivational factors and intentions to engage in political behaviours did not seem to be affected by income.

私人家庭在减少二氧化碳排放方面发挥着重要作用，但尚不清楚是否以及哪些心理因素与排放有关。鉴于收入作为消费和二氧化碳排放的一般驱动因素的相关性，研究收入和心理变量如何相互作用似乎尤为重要。在两项研究中（来自萨克森安哈尔特的一个城市的便利样本，N  = 642 名参与者和来自萨克森安哈尔特的代表性样本，N = 300 名参与者），我们调查了家庭收入在动机变量（生物圈价值取向、保护气候的个人规范和充足取向）与从事三种环境相关行为（削减行为、效率行为和政治行为）。结果表明，动机因素与所有三个行为领域相关。高收入和低收入家庭在动机因素和效率意图之间的相关性方面存在显着差异。正如预期的那样，动机因素与参与政治行为的意图之间的相关性似乎不受收入的影响。