52% Yes, a signiicant crisis 3% No, there is no crisis 7% Don't know 38% Yes, a slight crisis 38% Yes, a slight crisis 1,576 RESEARCHERS SURVEYED M ore than 70% of researchers have tried and failed to reproduce another scientist's experiments, and more than half have failed to reproduce their own experiments. Those are some of the telling figures that emerged from Nature's survey of 1,576 researchers who took a brief online questionnaire on reproducibility in research. The data reveal sometimes-contradictory attitudes towards reproduc-ibility. Although 52% of those surveyed agree that there is a significant 'crisis' of reproducibility, less than 31% think that failure to reproduce published results means that the result is probably wrong, and most say that they still trust the published literature. Data on how much of the scientific literature is reproducible are rare and generally bleak. The best-known analyses, from psychology 1 and cancer biology 2 , found rates of around 40% and 10%, respectively. Our survey respondents were more optimistic: 73% said that they think that at least half of the papers in their field can be trusted, with physicists and chemists generally showing the most confidence. The results capture a confusing snapshot of attitudes around these issues, says Arturo Casadevall, a microbiologist at the Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland. "At the current time there is no consensus on what reproducibility is or should be. " But just recognizing that is a step forward, he says. "The next step may be identifying what is the problem and to get a consensus. "

No abstract

Recent research has been concerned with whether speech accommodation is an automatic process or determined by social factors (e.g. Trudgill 2008). This paper investigates phonetic accommodation in New Zealand English when speakers of NZE are responding to an Australian talker in a speech production task. NZ participants were randomly assigned to either a Positive or Negative group, where they were either flattered or insulted by the Australian. Overall, the NZE speakers accommodated to the speech of the AuE speaker. The flattery/insult manipulation did not influence degree of accommodation, but accommodation was predicted by participants' scores on an Implicit Association Task that measured Australia and New Zealand biases. Participants who scored with a pro-Australia bias were more likely to accommodate to the speech of the AuE speaker. Social biases about how a participant feels about a speaker predicted the extent of accommodation. These biases are, crucially, simultaneously automatic and social. (Speech accommodation, phonetic convergence, New Zealand English, dialect contact)*

Socio-indexical cues and paralinguistic information are often beneficial to speech processing as this information assists listeners in parsing the speech stream. Associations that particular populations speak in a certain speech style can, however, make it such that socio-indexical cues have a cost. In this study, native speakers of Canadian English who identify as Chinese Canadian and White Canadian read sentences that were presented to listeners in noise. Half of the sentences were presented with a visual-prime in the form of a photo of the speaker and half were presented in control trials with fixation crosses. Sentences produced by Chinese Canadians showed an intelligibility cost in the face-prime condition, whereas sentences produced by White Canadians did not. In an accentedness rating task, listeners rated White Canadians as less accented in the face-prime trials, but Chinese Canadians showed no such change in perceived accentedness. These results suggest a misalignment between an expected and an observed speech signal for the face-prime trials, which indicates that social information about a speaker can trigger linguistic associations that come with processing benefits and costs.

Previous research has argued that fundamental frequency is a critical component of phonetic accommodation. We tested this hypothesis in an auditory naming task with two conditions. Participants in an unfiltered condition completed an auditory naming task with a single male model talker. A second group of participants was assigned to a filtered condition where the same stimuli had been high-pass filtered at 300 Hz, thereby eliminating the fundamental frequency. Acoustic analysis of f0 revealed that participants assigned to the unfiltered condition imitated the pitch of the model talker more than those assigned to the filtered condition. Although accommodation was statistically significant, the effect was small, so we followed with a perception study to examine listeners' abilities to detect differences in accommodation across conditions. Shadowed tokens from participants in the unfiltered condition were indeed judged by listeners to be more similar to the model talker's productions that those from participants in the filtered condition. However, acoustic measurements and listener judgments of accommodation were not significantly correlated, enforcing the intuitive concept that accommodation and listeners' judgments of similarity are holistic and do not hone in on singular features in the acoustic signal.