The role of haptic exploration of ground surface information in perception of overhead reachability

The authors performed an experiment in which participants (N = 24) made judgments about maximum jump and reachability on ground surfaces with different elastic properties: sand and a trampoline. Participants performed judgments in two conditions: (a) while standing and after having recently jumped on the surface in question and (b) while standing on a third control surface, eliminating haptic exploration of the surface in question. There was a high correlation between perceived maximum reachable height and actual maximum reachable height in all conditions. Judging performance on the basis of visual and haptic exploration of ground surface information was slightly overestimated, whereas performance on the basis of visual information alone was underestimated and variable for the different surfaces. The authors discuss possible causes for the observed errors. They emphasize that there is a considerable nonvisual aspect to the nature of the information specifying affordances for overhead reach and jumping and that perceptual performance is degraded when spontaneous exploratory movement is restricted.     

Classification of dog barks: a machine learning approach

In this study we analyzed the possible context-specific and individual-specific features of dog barks using a new machine-learning algorithm. A pool containing more than 6,000 barks, which were recorded in six different communicative situations was used as the sound sample. The algorithm's task was to learn which acoustic features of the barks, which were recorded in different contexts and from different individuals, could be distinguished from another. The program conducted this task by analyzing barks emitted in previously identified contexts by identified dogs. After the best feature set had been obtained (with which the highest identification rate was achieved), the efficiency of the algorithm was tested in a classification task in which unknown barks were analyzed. The recognition rates we found were highly above chance level: the algorithm could categorize the barks according to their recorded situation with an efficiency of 43% and with an efficiency of 52% of the barking individuals. These findings suggest that dog barks have context-specific and individual-specific acoustic features. In our opinion, this machine learning method may provide an efficient tool for analyzing acoustic data in various behavioral studies.     

The use of indigenous interviewers in a study of latino men who have sex with men: A research note

The use of indigenous researchers has long been practiced in ethnographic research; a similar use of indigenous personnel has not been as commonly undertaken in interview studies of men who have sex with men (MSM). This research note reports on the use of indigenous interviewers in a study of Latino MSM’s perceptions about sexual relationships and behaviors. The full study explores sexual relationships among Latino MSM, and HIV risk behaviors undertaken by a population of MSM residing in a community in southern California. This research note describes both the strengths and limitations that arise from employing indigenous interviewers for improving the overall quality of sensitive data. Benefits discussed include improved access to an otherwise highly restricted group, enhanced rapport-building capabilities, and greater understanding of language unique to the study population. Limitations discussed include the use of previously untrained interview personnel and age and gender issues.     

Longing for the Feminine: Reflections on Love,Sexual Orientation,Individuation, and the Soul

This article is a collaboration that represents several years of dialogue about our topic, alongside the individual depth work done by each of us to overcome the negativities that often poison collaborations and feeling connections: envy, enmeshment, and passivity. It is the unique expression of two women working together in a co-creative process pulsed by feminine principles. Diane is a Jungian analyst and has spent her life close to the unconscious. Fran is a writer, educator, and lifelong student of mystical paths. The article gives an account of Diane's longing for the divine feminine and the particular meaning it has for her as a lesbian in this time of global upheaval. In particular, her story highlights the psychic suffering that individuals go through when their same-sex attractions and love orientation are judged as psychologically “immature” or religiously “sinful.” Neither Christian-based “conversion therapy” nor Jungian analysis turned Diane into a heterosexual woman. Her story reveals the benefit of Jung's depth psychology even as it underscores the singularity of every person's individuation process. The article's unusual format is a tandem of Diane's first-person sharing of her soul's journey and Fran's witnessing of the journey's profound significance. We found that both voices were needed. Truth requires not only the one who lives a journey with courage but also the one who witnesses it with a loving heart. Ultimately, we see the personal journeys of gays and lesbians as significant to the larger context of the evolution of human consciousness.     

Maternal Sensitivity: a Resilience Factor against Internalizing Symptoms in Early Adolescents Born Very Preterm?

Compared with full-terms, preterm individuals are more at risk from infancy to adulthood for developing internalizing symptoms. Early maternal interactive behavior, especially maternal sensitivity, has been found to be a resilience factor in the developmental outcome of preterm children. The present longitudinal study aimed at examining whether early interactive parenting behaviors have a long term impact on the internalizing symptoms of preterm-born young adolescents. A total sample of 36 very preterm and 22 full-term children participated in an 11-year follow-up study. Maternal interactive behavior was assessed during a mother–infant interaction when the infant was 18 months old. At 11 years, internalizing symptoms were assessed with the Child Behavior Checklist (CBCL). Hierarchical regression analyses revealed that the interaction between groups (preterm/full-term) and maternal sensitivity at 18 months significantly explained CBCL internalizing symptoms at 11 years (β = ?0.526; p < 0.05). Specifically, although prematurity was related to internalizing problems, preterm children with higher maternal sensitivity did not differ from their full-term-born peers on the CBCL internalizing problems domain. These results suggest that maternal sensitivity is a long-term resilience factor preventing the development of internalizing problems at early adolescence in very preterm individuals.     

Bidirectional lexical-gustatory synesthesia

In developmental lexical–gustatory synesthesia, specific words (inducers) can trigger taste perceptions (concurrents) and these synesthetic associations are generally stable. We describe a case of multilingual lexical–gustatory synesthesia for whom some synesthesias were bidirectional as some tastes also triggered auditory word associations. Evoked concurrents could be gustatory but also tactile sensations. In addition to words and pseudowords, many voices were effective inducers, suggesting increased connections between cortical taste areas and both voice-selective and language-selective areas. Lasting changes in some evoked tastes occurred during childhood suggesting that some plasticity can be present after the initial learning of associations. Inducers were often linked to taste concurrents phonologically or semantically, but also through identifiable childhood episodes (persons or events). Several inducers were phonologically linked to episodic inducers suggesting a process of secondary acquisition for many inducers. Implications of these observations are discussed.     

Philosophical parrhesia as aesthetics of existence

According to some interpreters, Foucault's encounter with the Greek and Roman ethics led him to reconsider his earlier work and to turn away from politics. Drawing mostly from Foucault's last and hitherto unpublished lecture course, this paper argues that Foucault's turn to ethics should not be interpreted as a turn away from his previous work, but rather as its logical continuation and an attempt to resolve some of the outstanding questions. I argue that the 1984 lectures on parrhesia should be interpreted as Foucault's philosophical apology, as an attempt to defend himself against the charges of moral and epistemological nihilism, which were raised in response to his earlier work. In his last lectures, the Nietzschean Foucault somewhat surprisingly describes his earlier work as authentic Socratic philosophy and as ethical practice of freedom. In the conclusion, I assess the plausibility of Foucault's apology and speculate in which direction his work might have developed, had it not been cut off by his death.     

Sensory effects on judgments of short time-intervals

Two experiments were conducted to test the effect of nontemporal factors on duration discrimination. In Exp. 1, a forced-choice adaptive procedure with a standard duration of 400 or 800 ms was employed. It was shown that, for both auditory and visual modes, the discrimination is better with empty intervals (a silent period between two brief signals) than with filled intervals (a continuous signal), but only with shorter durations. In a second experiment, where intervals of the same duration range were employed but were presented with a single-stimulus method, discrimination was better with empty than with filled intervals, and this effect applied to both ranges of duration and both sensory modes. In both experiments, discrimination was better in the auditory than in the visual mode. These data are discussed in the context of current models of timing mechanisms. Received: 16 October 1997 / Accepted: 30 April 1998     

Selective adaptation of English consonants using real speech

Most English consonant-vowel (CV) syllables have other CV syllables embedded within them. For example, splicing sufficient energy from the onset of [k^ha] yields [p^ha], splicing into [ma] or [va] yields [ba], and splicing into [?a] yields [da]. We spliced successively longer segments from naturally spoken CV syllables to produce sequences of CV syllables which varied in discrete acoustic steps from [k^ha] to [p^ha], from [?a] to [da], from [ma] to [ba], from [fa] to [ba], and from [va] to [ba]. Random presentation of syllables in each series resulted in identification functions with typically sharp phoneme boundaries. For example, in the seven-syllable [?a]-[da] series (where [?a] was the original or first syllable), there were98% [?a] responses to Syllable 3, but only 12% [?a] responses (88% [da] responses) to Syllable 5. Following the identification test, subjects listened to 180 repetitions of either the first or last syllable in the test series, and were again required to identify randomly presented syllables from the test series. A shift in the phoneme boundary toward the repeated (adapting) syllable was observed for 11 of the 12 repeated syllables. Repeated presentation of [?a], for example, resulted in fewer [?a] responses to syllables in the [?a]-[da] series, compared to performance on the previous identification test. Likewise, repeated listening to [da] resulted in a decrease in [da] responses. Adaptation was selective in that syllables near the phoneme boundary were most affected by the adapting syllable. A shift in the phoneme boundary was also observed for two different continua when the adapting stimulus contained an acoustic feature identical to syllables in the test series. Thus, selective adaptation was found along a [ma]-[ba] continuum following repeated presentation of [na] and following repeated presentation of nasal resonance removed from its syllable context. A second major result, observed in five different experiments, was an asymmetrical adaptation effect. A greater shift in the phoneme boundary was observed following repeated presentation of the first syllable in each series (e.g., [?a]) than for the final embedded syllable (e.g., [da]). The results were discussed in terms of two different models of-selective adaptation.