![]() Given as much, an individual’s welfare range is the difference between the welfare level associated with the most intense positively valenced state that the individual can realize and the welfare level associated with the most intense negatively valenced state that the individual can realize. We assume hedonism, according to which all and only positively valenced states increase welfare and all and only negatively valenced states decrease welfare. An individual’s welfare range is the difference between the best and worst welfare states the individual can realize at a time. We’re particularly interested in how much welfare different individuals can realize at a time-that is, their respective welfare ranges. Still, some may be able to realize more welfare than others. The Moral Weight Project’s assumptions entail that everyone’s welfare counts the same and that all welfare improvements count equally. If we want to do as much good as possible, we have to compare all the ways of doing good-including ways that involve helping members of different species. The aim of this post is to provide an overview of the Welfare Range Table, which records the results of a literature review covering over 90 empirical traits across 11 farmed species. The aim of the sequence is to provide an overview of the research that Rethink Priorities conducted between May 2021 and October 2022 on interspecific cause prioritization-i.e., making resource allocation decisions across species. This is the second post in the Moral Weight Project Sequence. We do have information about some significant traits for many animals.Many of the traits about which we know the least are affective traits.We know less about the presence or absence of traits as we move from terrestrial vertebrates to most invertebrates.It’s rare to have evidence that animals lack a given trait.There are many unknowns across many species.Given some prominent theories about the functions of valenced states, we identified over 90 empirical proxies that might provide evidence of variation in the potential intensities of those states.Given hedonism, an individual’s welfare range is the difference between the welfare level associated with the most intense positively valenced state that the individual can realize and the welfare level associated with the most intense negatively valenced state that the individual can realize.Our objective: estimate the welfare ranges of 11 farmed species. ![]()
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