Pre-registration of Experiment 2a: https://osf.io/puyw6/?view_only=dff7e80373a9494e90112d9e89a45a42
Pre-registration of Experiment 2b: https://osf.io/df3qn/?view_only=e3338e5e4b594003b3a4edb67f9b2623
Pre-registration of Experiment 2c:
https://osf.io/78x3s/?view_only=7551b17d09c047c483071f510a3b74d4
*Note*: The former labels of Experiment 2a and 2b were Experiment 3a and 3b, respectively. The reason is that the OSF project originally included another study placed before the experiments. This original study focused on the effect of income inequality on psychological health but did not assess perceived competitiveness or avoidance/approach motivation. Because this original study was very different from the ResearchMatch longitudinal study and the causal-chain experiments, we eventually decided to save it for a different paper.