Self-affirmation moderates effects of unrealistic optimism and pessimism on reactions to tailored risk feedback

We examined whether self-affirmation would facilitate intentions to engage in colorectal cancer (CRC) screening among individuals who were off-schedule for CRC screening and who were categorised as unrealistically optimistic, realistic or unrealistically pessimistic about their CRC risk. All participants received tailored risk feedback; in addition, one group received threatening social comparison information regarding their risk factors, a second received this information after a self-affirmation exercise and a third was a no-treatment control. When participants were unrealistically optimistic about their CRC risk (determined by comparing their perceived comparative risk to calculations from a risk algorithm), they expressed greater interest in screening if they were self-affirmed (relative to controls). Non-affirmed unrealistic optimists expressed lower interest relative to controls, suggesting that they were responding defensively. Realistic participants and unrealistically pessimistic participants who were self-affirmed expressed relatively less interest in CRC screening, suggesting that self-affirmation can be helpful or hurtful depending on the accuracy of one's risk perceptions.     

When Should we Regret?

In this paper, I develop and defend the ‘Justified Decision Perspective’ (JDP) in answer to the question of when we should regret the things we have done. I claim that one should not regret a past decision one has made so long as it was justified in relation to the kind of person one was at the time of acting. On this time-indexing account, judging a decision to be justified – at least for the purposes of assessing one’s regrets – is a matter of identifying the practical reasons that were epistemically available to the agent when she was deliberating about what to do. Accordingly, when responding to her regrets, an agent should not invoke (a) reasons that existed but were epistemically unavailable to her when she was deliberating; or (b) reasons that only came into existence after she acted. The JDP has important implications for prospective regret. In particular, it implies we should worry less about experiencing regret in the future than many of us do. Thus, my overall aim is to show that we often have reason to reject our regrets, which means that regret should play a less prominent and painful role in our lives than it does currently.     

The morality of induced delivery of the anencephalic fetus prior to viability

In situations where anencephaly is diagnosed and where the mother's life or health is threatened Roman Catholic hospitals are faced with the dilemma of waiting until viability before inducing the fetus, thus potentially putting the mother at further risk. According to most Roman Catholic ethicists, induced delivery before viability is contrary to the Church's prohibition of direct killing of the innocent. The authors propose for discussion a reconsideration of this position in the case of the anencephalic fetus and conclude that taking the life of such a fetus does not constitute an attack on its personal dignity and therefore is morally permissible.     

Evidence for precategorical extrinsic vowel normalization

Three experiments investigated whether extrinsic vowel normalization takes place largely at a categorical or a precategorical level of processing. Traditional vowel normalization effects in categorization were replicated in Experiment 1: Vowels taken from an [?]–[ε] continuum were more often interpreted as /?/ (which has a low first formant, F ₁) when the vowels were heard in contexts that had a raised F ₁ than when the contexts had a lowered F ₁. This was established with contexts that consisted of only two syllables. These short contexts were necessary for Experiment 2, a discrimination task that encouraged listeners to focus on the perceptual properties of vowels at a precategorical level. Vowel normalization was again found: Ambiguous vowels were more easily discriminated from an endpoint [ε] than from an endpoint [?] in a high-F ₁ context, whereas the opposite was true in a low-F ₁ context. Experiment 3 measured discriminability between pairs of steps along the [?]–[ε] continuum. Contextual influences were again found, but without discrimination peaks, contrary to what was predicted from the same participants’ categorization behavior. Extrinsic vowel normalization therefore appears to be a process that takes place at least in part at a precategorical processing level.     

Chasing Vygotsky’s Dogs: Retrieving Lev Vygotsky’s Philosophy for a Workers’ Paradise

In an article published in 1930, Lev Vygotsky refers explicitly to the seventeenth century Dutch philosopher Benedictus de Spinoza. From a close reading of Vygotsky’s remarkable piece, ‘The socialist transformation of man,’ the extraordinary parallels in the lives and philosophies of Vygotsky and Spinoza are revealed. Then the strengths and weaknesses are assessed of the analytical approach Vygotsky may have inherited from Spinoza. It is suggested that there are analytical ramifications arising from Vygotsky’s possible reliance on Spinoza’s nuanced but essentially dualistic philosophy. The conclusion is that the key limitation of this methodology is the elision of radical doubting with radical unknowability.     

Book reviews

Narmour, E. (1992). The analysis and cognition of melodic complexity: The implication-realization model. Chicago, IL: University of Chicago Press. Pp. xii + 444. ISBN 0-226-56842-3. £39.95 (Hbk).

Gabriel, M., & Moore, J. (Eds.) (1990). Learning and computational neuroscience: Foundations of adaptive networks. Cambridge, MA: MIT Press. Pp. xv + 13. ISBN 0-262-07102-9. £44.95.

Brady, S.A., & Shankweiler, D.P. (Eds.) (1991). Phonological processes in literacy: A tribute to Isabelle Y. Liberman. Hillsdale, NJ: Lawrence Erlbaum Associates Inc. Pp. xxv + 266. ISBN 0-8059-0501-X. £46.95 (Hbk).

Tokhura, Y., Vatikiotis-Bateson, E., & Sagisaka, Y. (1992). Speech perception, production and linguistic strucutre. Tokyo.: IOS Press. Pp. 463. ISBN 90-5199-084-7. £70.00.

Tohkura, Y., Vatikiotis-Bateson, E., & Sagisaka, Y. (Eds.) (1992). Speech perception, production and linguistic structure. Amsterdam: IOS Press. Pp. 463. ISBN 90-5199-084-7. £70.00.     

Merging information in speech recognition: feedback is never necessary

Top-down feedback does not benefit speech recognition; on the contrary, it can hinder it. No experimental data imply that feedback loops are required for speech recognition. Feedback is accordingly unnecessary and spoken word recognition is modular. To defend this thesis, we analyse lexical involvement in phonemic decision making. TRACE (McClelland & Elman 1986), a model with feedback from the lexicon to prelexical processes, is unable to account for all the available data on phonemic decision making. The modular Race model (Cutler & Norris 1979) is likewise challenged by some recent results, however. We therefore present a new modular model of phonemic decision making, the Merge model. In Merge, information flows from prelexical processes to the lexicon without feedback. Because phonemic decisions are based on the merging of prelexical and lexical information, Merge correctly predicts lexical involvement in phonemic decisions in both words and nonwords. Computer simulations show how Merge is able to account for the data through a process of competition between lexical hypotheses. We discuss the issue of feedback in other areas of language processing and conclude that modular models are particularly well suited to the problems and constraints of speech recognition.