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My primary areas of research are philosophy of psychology (including perception and social cognition), philosophy of mind, philosophy of science, and philosophy of language. My work in these areas explores the nature and structure of bias and purported cases of implicit content---e.g., transformation principles within the visual-perceptual system, computational processes in socio-cognitive systems, and predictive models in artificial intelligence programs---as well as the implications the possibility of implicit content has for computational theories of mind more generally.
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From Newell's Unified Theories of Cognition, 1994 |
What is a bias? Standard philosophical views of both implicit and explicit bias focus this question on the representations one harbors, e.g., stereotypes or implicit attitudes, rather than the ways in which those representations (or other mental states) are manipulated. I call this approach representationalism. In this paper, I argue that representationalism taken as a general theory of psychological social bias is a mistake because it conceptualizes bias in ways that do not fully capture the phenomenon. Crucially, this view fails to capture a heretofore neglected possibility of bias, one that influences an individual's beliefs about or actions toward others, but is, nevertheless, nowhere represented in that individual's cognitive repertoire. In place of representationalism, I develop a functional account of psychological social bias that characterizes it as a mental entity that takes propositional mental states as inputs and returns propositional mental states as outputs in a way that instantiates social-kind inductions. This functional characterization leaves open which mental states and processes bridge the gap between the inputs and outputs, ultimately highlighting the diversity of candidates that can serve this role.
Algorithmic Bias: on the Implicit Biases of Social Technology, forthcoming, Synthese, http://philsci-archive.pitt.edu/17169/
Often machine learning programs inherit social patterns reflected in their training data without any directed effort by programmers to include such biases. Computer scientists call this algorithmic bias. This paper explores the relationship between machine bias and human cognitive bias. In it, I argue similarities between algorithmic and cognitive biases indicate a disconcerting sense in which sources of bias emerge out of seemingly innocuous patterns of information processing. The emergent nature of this bias obscures the existence of the bias itself, making it difficult to identify, mitigate, or evaluate using standard resources in epistemology and ethics. I demonstrate these points in the case of mitigation techniques by presenting what I call 'the Proxy Problem'. One reason biases resist revision is that they rely on proxy attributes, seemingly innocuous attributes that correlate with socially-sensitive attributes, serving as proxies for the socially-sensitive attributes themselves. I argue that in both human and algorithmic domains, this problem presents a common dilemma for mitigation: attempts to discourage reliance on proxy attributes risk a tradeoff with judgement accuracy. This problem, I contend, admits of no purely algorithmic solution.
The Psychology of Bias, 2020, in An Introduction to Implicit Bias: Knowledge, Justice, and the Social Mind, Erin Beeghly and Alex Madva (eds.), Routledge, Penultimate Draft
What’s going on in the head of someone with an implicit bias? Psychological and philosophical attempts to answer this question have centered on one of two distinct data patterns displayed in studies of individuals with implicit biases: divergence and rational responsiveness. However, explanations focused on these different patterns provide different, often conflicting answers to the question. In this chapter, I provide a literature review that addresses these tensions in data, method, and theory in depth. I begin by surveying the empirical data concerning patterns of divergence and rational responsiveness. Next, I review the psychological theories that attempt to explain these patterns. Finally, I suggest that tensions in the psychological study of implicit bias highlight the possibility that implicit bias is, in fact, a heterogeneous phenomenon, and thus, future work on implicit bias will likely need to abandon the idea that all implicit biases are underwritten by the same sorts of states and process.
Are Algorithms Value-Free? Feminist Theoretical Virtues in Machine Learning, provisionally forthcoming in Journal of Moral Philosophy, special issue on "Justice, Power, and the Ethics of Algorithmic Decision-Making", Annette Zimmerman (ed.), Penultimate Draft
As inductive decision-making procedures, the inferences made by machine learning programs are subject to underdetermination by evidence and bear inductive risk. Attempts to address these challenges are typically guided by the presumption that machine learning processes can and should be value-free. In being guided in this way, the influence of values has been purportedly restricted to data and decision outcomes, thereby ignoring internal value-laden choice points. In this paper, I apply arguments from feminist philosophy of science to machine learning programs to make the case that the resources required to respond to these challenges render critical aspects of their use essentially value-laden. I demonstrate these points specifically in the case of recidivism algorithms, arguing that current debates surrounding fairness in these risk-assessment programs are best understood as iterations of traditional arguments from inductive risk. Finally, in light of these points, I address opportunities for salvaging the value-free ideal in machine learning and the limitations that accompany such approaches.
Works in Progress:
Drafts Available Upon Request
Are Implicit Biases Implicit Biases?
Despite the controversies surrounding implicit bias, it nonetheless seems central to our everyday understanding of implicit bias that it involves unconscious prejudices toward members of marginalized groups. It might then be surprising to learn that the overwhelming sentiment among social psychologists now denies this, and instead asserts that we do have introspective access to our attitudes measured by the Implicit Association Test. In other words, implicit biases are not implicit biases. In this talk, I argue that claims alleging the conscious (in)accessibility of bias are made fraught by ambiguity and confusion with respect to the two central concepts these claims involve: bias and conscious accessibility. I address the question of whether implicit biases are implicit biases by addressing both whether implicit biases are implicit and whether implicit biases are biases.
Inside the Black Box: on the system-dependence of bias
What states and processes realize a bias function? In this chapter, I argue that social biases are not unique to any particular level of cognitive architecture and that the states and processes that constitute bias functions will depend on the wider psychological system in which they’re embedded. Perceptual social biases, for example, will be constituted by obvious, superficial perceptual attributives, like the perceived lightness of someone’s skin. Theory-based social biases, for another example, will be constituted by a complex inferential pattern that tacitly assumes certain stereotypical properties are causally dependent on some underlying, hidden essence. This analysis of bias has an important practical consequence: since the states and processes they comprise are system-dependent, no one mitigation technique will be universally effective. Our most effective debiasing techniques will be tailored to how mental systems globally operate.
Proxies Aren't Intentional, They're Intentional
A paper on theories of content in artificial intelligence systems.