Word embeddings reveal growing moral concern for people, animals and the environment.

The Enlightenment idea of historical moral progress asserts that civil societies become more moral over time. This is often understood as an expanding moral circle and is argued to be tightly linked with language use, with some suggesting that shifts in how we express concern for others can be considered an important indicator of moral progress. Our research explores these notions by examining historical trends in natural language use during the 19th and 20th centuries.

Are we smart enough to remember how smart animals are?

Some theoretical perspectives suggest people overestimate animals' mental capacities (anthropomorphism), while others suggest the reverse (mind-denial). However, studies have generally not employed objective criteria against which the accuracy or appropriateness of people's judgments about animals can be tested. We employed memory paradigms, in which judgments are clearly right or wrong, in nine experiments (eight preregistered; = 3,162).

Changing minds about minds: Evidence that people are too sceptical about animal sentience.

Our relationships with other animals are governed by how we view their capacity for sentience and suffering. However, there is currently little agreement as to whether people's beliefs about animal minds are largely accurate or inaccurate. We used an innovative task to examine how people update their beliefs in response to noisy but informative clues about animal minds.

Speciesism in everyday language.

Speciesism, like other forms of prejudice, is thought to be underpinned by biased patterns of language use. Thus far, however, psychological science has primarily focused on how speciesism is reflected in individuals' thoughts as opposed to wider collective systems of meaning such as language. We present a large-scale quantitative test of speciesism by applying machine-learning methods (word embeddings) to billions of English words derived from conversation, film, books, and the Internet.

Unpalatable truths: Commitment to eating meat is associated with strategic ignorance of food-animal minds.

Animal minds are of central importance to debates about their rights and welfare. Remaining ignorant of evidence that animals have minds is therefore likely to facilitate their mistreatment. Studying samples of adults and students from the UK and US we found that, consistent with motivational perspectives on meat consumption, those who were more (vs.

When smiles (and frowns) speak words: Does power impact the correspondence between self-reported affect and facial expressions?

Self-reported experiences are often poor indicators of outward expressions. Here we examine social power as a variable that may impact the relationship between self-reported affect and facial expressions. Earlier studies addressing this issue were limited by focusing on a single facial expression (smiling) and by using different, less sensitive methods that yielded mostly null results.

Can People Judge the Veracity of Their Intuitions?

People differ in the belief that their intuitions produce good decision outcomes. In the present research, we sought to test the validity of these beliefs by comparing individuals' self-reports with measures of actual intuition performance in a standard implicit learning task, exposing participants to seemingly random letter strings (Studies 1a-b) and social media profile pictures (Study 2) that conformed to an underlying rule or grammar. A meta-analysis synthesizing the present data ( = 400) and secondary data by Pretz, Totz, and Kaufman found that people's enduring beliefs in their intuitions were not reflective of actual performance in the implicit learning task.