Races may exist in humans in a cultural sense, but biological concepts of race are needed to access their reality in a non-species-specific manner and to see if cultural categories correspond to biological categories within humans. Modern biological concepts of race can be implemented objectively with molecular genetic data through hypothesis-testing. Genetic data sets are used to see if biological races exist in humans and in our closest evolutionary relative, the chimpanzee. Using the two most commonly used biological concepts of (...) race, chimpanzees are indeed subdivided into races but humans are not. Adaptive traits, such as skin color, have frequently been used to define races in humans, but such adaptive traits reflect the underlying environmental factor to which they are adaptive and not overall genetic differentiation, and different adaptive traits define discordant groups. There are no objective criteria for choosing one adaptive trait over another to define race. As a consequence, adaptive traits do not define races in humans. Much of the recent scientific literature on human evolution portrays human populations as separate branches on an evolutionary tree. A tree-like structure among humans has been falsified whenever tested, so this practice is scientifically indefensible. It is also socially irresponsible as these pictorial representations of human evolution have more impact on the general public than nuanced phrases in the text of a scientific paper. Humans have much genetic diversity, but the vast majority of this diversity reflects individual uniqueness and not race. (shrink)

Recasting important questions about truth and objectivity in new and helpful terms, his book will become a focus in the contemporary debates over realism, and ...

According to The Bell Curve, Black Americans are genetically inferior to Whites. That's not the only point in Richard Herrnstein and Charles Murray's book. They also argue that there is something called "general intelligence" which is measured by IQ tests, socially important, and 60 percent "heritable" within whites. (I'll explain heritability below.) But the claim about genetic inferiority is my target here. It has been subject to wide-ranging criticism since the book was first published last year. Those criticisms, however, have (...) missed its deepest flaws. Indeed, the Herrnstein/Murray argument depends on conceptual confusions that have been tacitly accepted to some degree by many of the book's sharpest critics. (shrink)

Among race theorists, the view that race is a social construction is widespread. While the term ‘ social construction’ is sometimes intended to mean merely that race does not constitute a robust, biological natural kind, it often labels the stronger position that race is real, but not a biological kind. For example, Charles Mills writes that, ‘‘the task of those working on race is to put race in quotes, ‘race’, while still insisting that nevertheless, it exists ’’. It is to (...) ‘‘make a plausible social ontology neither essentialist, innate, nor transhistorical, but real enough for all that’’. Racial constructionism, thus conceived, is a metaphysical position that contrasts both with the view that race is an important biological kind and with the more recent claim that race does not exist. The desire for a constructionist metaphysics of race emerges against the background of a cluster of normative disputes, including. (shrink)

This paper examines Ian Hacking's analysis of the looping effects of psychiatric classifications, focusing on his recent account of interactive and indifferent kinds. After explicating Hacking's distinction between 'interactive kinds' (human kinds) and 'indifferent kinds' (natural kinds), I argue that Hacking cannot claim that there are 'interactive and indifferent kinds,' given the way that he introduces the interactive-indifferent distinction. Hacking is also ambiguous on whether his notion of interactive and indifferent kinds is supposed to offer an account of classifications or (...) objects of classification. I argue that these conceptual difficulties show that Hacking's account of interactive and indifferent kinds cannot be based on - and should be clearly separated from - his distinction between interactive kinds and indifferent kinds. In clarifying Hacking's account, I argue that interactive and indifferent kinds should be regarded as objects of classification (i.e., kinds of people) that can be identified with reference to a law-like biological regularity and are aware of how they are classified. Schizophrenia and depression are discussed as examples. I subsequently offer reasons for resisting Hacking's claim that the objects of classification in the human sciences - as a result of looping effects - are 'moving targets'. (shrink)

Designing proper measures and carrying them out is one of the key jobs we expect science to accomplish. Properly defined and properly executed scientific measurements provide us with a precise picture of the things we study and give us the kind of information from which we can build scientific laws, models and principles that can help us predict and change the world around us. This chapter is about how this is done in the social sciences.

Quayshawn Spencer argues for radical racial pluralism, the position that there is a plurality of natures and realities for race in the United States. In this paper, I raise two difficulties for Spencer’s argument. The first is targeted narrowly at his response to a potential objection to his argument, and the second is a more general difficulty to do with how the argument handles the social consequences of the authoritative categorization of people. Although the second difficulty is more serious than (...) the first, neither is insurmountable. I then sketch an alternative argument for radical racial pluralism, one that would be likely to succeed in the event that Spencer’s argument turned out to fail. Considering these two contrasting routes to radical racial pluralism highlights the fact that radical racial pluralism is a rather more modest metametaphysical position than it may have initially appeared to be. In virtue of this, I suggest that we should develop and assess a more radically pluralist metametaphysical account of race, which I term ‘ultra-radical racial pluralism’. (shrink)

One debate that metaphysicians of race have been consumed with since the 1990s is what we can call the US race debate, which is the debate about what the nature and reality of race is according to the dominant ways that ‘race’ and race terms are used to classify people in contemporary American English. In 2014, I contributed a defence of biological racial realism in the US race debate that utilized new results about human genetic clustering from population genetics. In (...) this paper, I will show that all US race theories have been wrong, including my own. This is because, as I will argue, the correct US race theory has a radically pluralist form. This is an instance of a metametaphysical position that I call radical racial pluralism. After defending radical racial pluralism in the US race debate, I explore valuable implications of the view for philosophers of race. (shrink)

In this article I show that population geneticists are acknowledging a kind of biological population that has hitherto been unappreciated by philosophers. The new population talk occurs when population geneticists call continent-level human genetic clusters ‘populations’ in population structure research. My theory is that the kind of population being referred to is the K population, which is, roughly, a biological population whose members are united by common genomic ancestry and in which population membership is graded. After presenting and defending the (...) theory, I show that the K population is indeed a kind of biological population. Finally, I address likely objections. (shrink)

If a human subject knows they are being measured, this knowledge may affect their attitudes and behaviour to such an extent that it affects the measurement results as well. This broad range of effects is shared under the term ‘reactivity’. Although reactivity is often seen by methodologists as a problem to overcome, in this paper I argue that some quite extreme reactive changes may be legitimate, as long as we are measuring phenomena that are not simple biological regularities. Legitimate reactivity (...) is reactivity which does not undermine the accuracy of a measure; I show that if such reactivity were corrected for, this would unjustifiably ignore the authority of the research subject. Applying this argument to the measurement of depression, I show that under the most commonly accepted models of depression there is room for legitimate reactivity. In the first part of the paper, I provide an inventory of the different types of reactivity that exist in the literature, as well as the different types of phenomena that one could measure. In the second part, I apply my argument to the measurement of depression with the PHQ-9 survey. I argue that depending on what kind of phenomenon we consider depression to be, we will accept different kinds of reactivity. I show that both under the harmful dysfunction model and the practical kinds model, certain reactive changes in measuring depression are best seen as legitimate recharacterizations of the underlying phenomenon, and define what legitimate means in this context. I conclude that in both models, biological aspects constrain characterization, but the models are not so strict that only one concept is acceptable, leaving room for reactivity. (shrink)

ABSTRACT Standard accounts of convention include notions of arbitrariness. But many have conceived of conventionality as an all-or-nothing affair. In this paper, I develop a framework for thinking of conventions as admitting of degrees of arbitrariness. In doing so, I introduce an information-theoretic measure intended to capture the degree to which a solution to a certain social problem could have been otherwise. As the paper argues, this framework can help to improve explanation aimed at the cultural evolution of social traits. (...) Good evolutionary explanations recognise that most functional traits are also conventional, at least to some degree, and vice versa. (shrink)