The Earth’s climate is changing due to anthropogenic greenhouse gas emissions. Conservation psychology has the capacity to produce research that can inform efforts to modify human behavior to mitigate climate change. However, psychology has recently been facing a replication crisis: Several recent studies have found that the findings of many published psychological studies cannot be reproduced in independent replications. In response to this crisis, psychologists have begun to pursue practices that can improve the replicability and credibility of findings—for example, preregistering data collection and analysis plans before collecting data, and openly sharing data for re-analysis. However, open science practices such as these are not yet widely employed in conservation psychology. We argue that replicability is especially important in conservation psychology given the field’s focus on high stakes applied research. We provide an example of a preregistered replication (of van der Linden et al. 2017). van der Linden et al. reported that they were able to successfully “inoculate” participants against politically motivated misinformation about climate change by pre-emptively warning them of this misinformation. In our replication study, we preregistered hypotheses based on van der Linden et al’s study, along with a detailed data collection and analysis plan (available at https://osf.io/8ymj6/). Our replication study used a mixed between-within design, with data collected via Mechanical Turk (N = 792). We were able to replicate some (but not all) of van der Linden et al’s findings. Specifically, we found that providing information about the scientific consensus on climate change increased perceptions of scientific consensus, as did an inoculation intervention provided prior to provision of misinformation. However, we were unable to replicate their finding that an inoculation intervention counteracted the effect of misinformation to a greater extent than simply providing information about scientific consensus.
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