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Abstract

The objective of the study is to assess the hearing performance of cochlear implant users in three device microphone configurations: omni-directional, directional, and beamformer (BEAMformer two-adaptive noise reduction system), in localization and speech perception tasks in dynamically changing listening environments. Seven cochlear implant users aided with Cochlear CM-24 devices with Freedom speech processor participated in the study. For the localization test in quiet and in background noise, subjects demonstrated significant differences between different microphone settings. Confusion matrices showed that in about 70% cases cochlear implant subjects correctly localized sounds within a horizontal angle of 30-40◦ (±1◦ loudspeaker apart from signal source). However localization in noise was less accurate as shown by a large number of considerable errors in localization in the confusion matrices. Average results indicated no significant difference between three microphone configurations. For speech presented from the front 3 dB SNR improvements in speech intelligibility in three subjects can be observed for beamforming system compared to directional and omni-directional microphone settings. The benefits of using different microphone settings in cochlear implant devices in dynamically changing listening conditions depend on the particular sound environment
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Abstract

The purpose of this two-wave longitudinal study was to investigate cross-lagged relations between sexual attitudes, perception of love and sex, and young adults’ relationship status over a period of one year. The current study tested two hypotheses: the first hypothesis assuming that sexual attitudes, perception of love and sex can be predictive of relationship status after a one-year interval; and the second hypothesis assuming that relationship status at T1 can be predictive of sexual attitudes and perception of love and sex after a one-year interval. Results from 117 Polish young adults (94 females and 23 males) aged 20–33 (M = 21.42, SD = 1.79) indicated that the conviction that sex is no longer as much a part of the relationship as it used to be (i.e., Sex is Declining scale) measured in the first assessment was a significant predictor of relationship status after a one-year interval. Furthermore, sexual attitudes and perception of love and sex at T1 were found to be predictive of sexual attitudes and perception of love and sex at T2. In addition, gender at T1 was predictive of instrumentality at T2, while being female at T1 related to higher instrumentality at T2.
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