Should the probabilities count?

When facing a choice between saving one person and saving many, some people have argued that fairness requires us to decide without aggregating numbers; rather we should decide by coin toss or some form of lottery, or alternatively we should straightforwardly save the greater number but justify this in a non-aggregating contractualist way. This paper expands the debate beyond well-known number cases to previously under-considered probability cases, in which not (only) the numbers of people, but (also) the probabilities of success for saving people vary. It is shown that, in these latter cases, both the coin toss and the lottery lead to what is called an awkward conclusion, which makes probabilities count in a problematic way. Attempts to avoid this conclusion are shown to lead into difficulties as well. Finally, it is shown that while the greater number method cannot be justified on contractualist grounds for probability cases, it may be replaced by another decision method which is so justified. This decision method is extensionally equivalent to maximising expected value and seems to be the least problematic way of dealing with probability cases in a non-aggregating manner.     

Should Psychology Ignore the Language of the Brain?

ABSTRACT— Claims that neuroscientific data do not contribute to our understanding of psychological functions have been made recently. Here I argue that these criticisms are solely based on an analysis of functional magnetic resonance imaging (fMRI) studies. However, fMRI is only one of the methods in the toolkit of cognitive neuroscience. I provide examples from research on event-related brain potentials (ERPs) that have contributed to our understanding of the cognitive architecture of human language functions. In addition, I provide evidence of (possible) contributions from fMRI measurements to our understanding of the functional architecture of language processing. Finally, I argue that a neurobiology of human language that integrates information about the necessary genetic and neural infrastructures will allow us to answer certain questions that are not answerable if all we have is evidence from behavior.     

Should we change the human genome?

Should we change the human genome? The most general arguments against changing the human genome are here in focus. Distinctions are made between positive and negative gene therapy, between germ-line and somatic therapy, and between therapy where the intention is to benefit a particular individual (a future child) and where the intention is to benefit the human gene-pool. Some standard arguments against gene-therapy are dismissed. Negative somatic therapy is not controversial. Even negative, germ-line therapy is endorsed, if the intention is to cure a certain individual (a future child). In rare cases, positive therapy on somatic cells may be warranted. Germ-line therapy may become a valuable method of preventing harm, through ‘genetic vaccination’. If safe methods evolve, it is harmless (though vain), to try to achieve more ambitious goals. Prospective parents should not be prevented from exercising this harmless kind of parental authority. The paper concludes: Thereis a moral limit to how much we ought to manipulate the human genome, however. We ought not to jeopardize the continued existence of mankind. We ought not to develop methods of germ-line therapy intended in a radical manner to improve human nature, and we ought to leave to prospective parents to decide in individual cases what kind of intervention shall take place.     

Will the costs of accommodating workers with disabilities remain low?

Whether the costs of job accommodation remain low as more persons with disabilities enter the work force is a crucial issue in evaluating the progress of the employment provisions of the Americans with Disabilities Act (ADA). Much depends on the extent to which health and economic factors thought to raise or lower the costs of accommodation to employers actually predict accommodation outcomes. An empirical model of employer accommodation is specified and tested with data on a representative sample of Americans in their fifties. Among others, the results show that both the likelihood and extent of job accommodation are significantly influenced by cost-increasing and cost-decreasing factors, in each case in the direction predicted by the model. Inferences about the future trajectory of the costs of job accommodation and the employment effects of the ADA are discussed. Copyright © 1999 John Wiley & Sons, Ltd.     

Should we study the Hippocratic Oath?

In this commentary on a study by H. Steven Moffic, et al., of the current status of the Hippocratic Oath in medical education, Veatch discusses the relation of the oath to ethical conduct, the meaning of primum non nocere ("do no harm"), and the limitations of practicing Hippocratic ethics.     

Should we reject the expertise hypothesis?

On the basis of a review of the literature and the results of three experiments with dog experts, Robbins and McKone [Robbins, R. A., & McKone, E. (2006). No face-like processing for objects-of-expertise in three behavioural tasks, Cognition] argue that there is little or no evidence supporting an expertise account of the differences in configural processing that are typically observed between faces and non-face objects. In the spirit of a debate that has become overly polarized, we believe that R&M often emphasized relatively unimportant controversial issues at the expense of bigger, more important questions. We also feel that some of R&M's arguments are rooted in methodological confusions that should be clarified because they have implications beyond this specific debate. In this commentary, we first clarify issues surrounding the proper statistical analysis of the composite paradigm, a methodology that is commonly used to assess configural and holistic effects in both face and non-face objects. We then discuss several theoretical issues that we feel are central to the debate regarding accounts of face-specificity. We also briefly review positive evidence for the correlation between measures of behavioral expertise and neural markers of face-selectivity. Unlike R&M, we believe the positive evidence for expertise effects, both behavioral and neural, greatly outweighs evidence stemming from null results and that it clearly motivates the importance of future work on the role of experience in the specialization of visual cortex.     

“sexuality and death” in freud's discovery of sexual aetiology

Abstract

The present study focuses on Freud's discovery of sexual aetiology in the period from his studies in Paris and Berlin (1885–86) to self-analysis (1897). The study gives a reassessment of both the link and the break between Freud's early works and the contemporary medical views and splits concerning sexual aetiology, which is relevant for the understanding of Freud's later developments. Freud's initial aversion toward sexual aetiology is investigated, and a significant connection between sexuality and death is found in the medical practice of female circumcision and castration in the treatment of hysteria. Finally, the relevance of the tabooed surgical operations is discussed in relation to a series of important moments for the birth of psychoanalysis (the collaboration with Fliess and the operation on Emma Eckstein, the Irma dream, the seduction theory and its abandonment, and the emergence in Freud of the memory of the death of little Julius as the “germ of guilt”).     

Are individual or consecutive letters the unit affected by repetition blindness?

When 2 similar words (e.g., react reach) are briefly sequentially displayed, the 2nd word may be omitted from the report, a phenomenon known as repetition blindness (RB). Previous researchers have suggested that consecutive letters are the unit affected by RB. Six experiments provided new data on orthographic RB. Two letters at the beginning or end of words resulted in RB, as did alternating interior letters (tactile earthly) and 3 letters with different relative positions (arid bird). However, no RB was found with a single final letter (show view). Observed RB may reflect pattern completion because RB for pairs like throat theory was reduced when the nonrepeated letters (eory) were consistent with only a single word. The experiments point to a model of orthographic RB in which both individual letters and letter sequences of length 2 or more play a role.     

Should Social Aggression be Considered “Antisocial”?

There is converging evidence that physical aggression and non-aggressive rule-breaking constitute meaningfully distinct, if somewhat overlapping, dimensions of antisocial behavior, with different developmental trajectories, demographic correlates, and etiologies. Social aggression can also be factor-analytically and demographically distinguished from physically aggressive and rule-breaking antisocial behavior. However, there is ongoing debate as to whether social aggression should also be considered “antisocial” in the way the term is commonly understood, given that socially aggressive behaviors are generally legal and nearly normative during adolescence. The current study sought to empirically evaluate the notion that social aggression constitutes a form of antisocial behavior that is separable from other forms of antisocial behavior. We thus conducted a preliminary study to examine whether social aggression was associated with other forms of antisocial behavior and a variety of correlates of antisocial behavior in a sample of 497 undergraduates. Analyses revealed that social aggression was independently associated with other measures of antisocial behavior, substance use and unethical behaviors, as well as the personality traits known to predict current and future antisocial behavior. These associations were particularly pronounced in women. Such findings are consistent with our hypothesis that social aggression constitutes a distinct form of antisocial behavior.     

Should Happiness-Maximization be the Goal of Government?

Recent social surveys of happiness (subjective well-being) have given a new stimulus to utilitarian political theory by providing a statistically reliable measure of the ‘happiness’ of individuals that can then be correlated with other variables. One general finding is that greater happiness does not correlate strongly with increased wealth, beyond modest levels, and this has led to calls for governments to shift priorities away from economic growth and towards other social values. This paper notes how the conclusions of this research help to address some of the traditional objections to utilitarianism. The question of how happiness research findings can be used to set happiness-maximization goals for public policy needs careful examination, as the translation from research to policy is not always straightforward. Some empirical and ethical objections to this ‘new utilitarianism’ are raised. The complicating factors of public expectations of, and trust in, governments pose obstacles to any proposal that happiness research may lead to changes in public policy and hence to ‘happier’ populations.     

Should “multiple imputations” be treated as “multiple indicators”?

Rubin's multiple imputation approach to missing data creates synthetic data sets, in which each missing variable is replaced by a draw from its predictive distribution, conditional on the observed data. By construction, analyses of such filled-in data sets as if the imputations were true values have the correct expectations for population parameters. In a recent paper, Mislevy showed how this approach can be applied to estimate the distributions of latent variables from complex samples. Multiple imputations for a latent variable bear a surface similarity to classical multiple indicators of a latent variable, as might be addressed in structural equation modelling or hierarchical modelling of successive stages of random sampling. This note demonstrates with a simple example why analyzing multiple imputations as if they were multiple indicators does not generally yield correct results; they must instead be analyzed by means concordant with their construction.I am grateful to Frank Jenkins, John Mazzeo, Kentaro Yamamoto, and Rebecca Zwick for comments on earlier versions of this paper.