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Two recent studies from Australia and Germany have both shown that people who stutter (PWS) have elevated Neuroticism scores on the widely used NEO Five Factor Inventory (NEO-FFI) compared to individuals in a control sample. The two studies showed opposite results, however, for the personality traits Agreeableness and Conscientiousness. One reason for these opposing findings could be that the two studies were conducted in different cultural settings. Given that the effect of different cultural background on the relationship between the NEO-FFI and stuttering remains an open question, we investigated the NEO-FFI scores from 98 PWS and an age- and sex-matched control-group from a less widely studied cultural background (Iran). Overall, the present study showed, in line with a study from Germany, higher Agreeableness, but not Neuroticism, in PWS compared to normally fluent controls. To get further insights into these findings, we also contrasted both samples from Iran with a healthy matched sample from Germany. The resulting cross-cultural differences from these analyses are also discussed in the present paper. Although the present study is limited by a cross-sectional design, and so no causal conclusions can be drawn, the authors discuss whether the replicated elevated Agreeableness scores in PWS might represent a self-defense mechanism to cope with one's own speech handicap. [ABSTRACT FROM AUTHOR]

• Techniques for late spontaneous recovery from stuttering clustered into six strategies. • The strategies reflect components of established treatments and naïve explanations. • Causal attributions of recovery clustered into three implicit theories about recovery. • Knowledge about strategies and implicit theories may help to improve treatment. (1) To survey the employed techniques and the reasons/occasions which adults who had recovered from stuttering after age 11 without previous treatment reported as causal to overcome stuttering, (2) to investigate whether the techniques and causal attributions can be reduced to coherent (inherently consistent) dimensions, and (3) whether these dimensions reflect common therapy components. 124 recovered persons from 8 countries responded by SurveyMonkey or paper-and-pencil to rating scale questions about 49 possible techniques and 15 causal attributions. A Principal Component Analysis of 110 questionnaires identified 6 components (dimensions) for self-assisted techniques (Speech Restructuring; Relaxed/Monitored Speech; Elocution; Stage Performance; Sought Speech Demands; Reassurance; 63.7% variance explained), and 3 components of perceived causal attributions of recovery (Life Change, Attitude Change, Social Support; 58.0% variance explained). Two components for self-assisted techniques (Speech Restructuring; Elocution) reflect treatment methods. Another component (Relaxed/Monitored Speech) consists mainly of items that reflect a common, non-professional understanding of effective management of stuttering. The components of the various perceived reasons for recovery reflect differing implicit theories of causes for recovery from stuttering. These theories are considered susceptible to various biases. This identification of components of reported techniques and of causal attributions is novel compared to previous studies who just list techniques and attributions. The identified dimensions of self-assisted techniques and causal attributions to reduce stuttering as extracted from self-reports of a large, international sample of recovered formerly stuttering adults may guide the application of behavioral stuttering therapies. [ABSTRACT FROM AUTHOR]