These results failed to support previous research, which indicated that amplification of auditory input could benefit balance in individuals with hearing and balance disorders. Further research utilizing randomized controlled trials is needed to resolve the disparity between the current results and those of previous studies.
Magnetic, Mössbauer effect, and thermal properties have been evaluated for specimens of the mineral ankerite and are contrasted with similar measurements reported for the mineral siderite to determine if ankerite (and ferroan dolomite), like siderite, may be important in paleomagnetism as a producer of secondary, spurious remanent moments as the result of oxidation in air. Our data indicate that ankerite and siderite both have comparable thermal stabilities and that ankerite does break down to form iron oxides at temperatures as low as 250°C during thermal demagnetization. We conclude from our data that any iron carbonate, siderite, ankerite, or ferroan dolomite, may readily oxidize in air to maghemite or hematite thus producing a spurious remanent moment (RM) that can dominate the magnetic properties of the specimen. Thermal demagnetization of ankerite or siderite at lower temperatures (below 250°C) does not appear to produce such a spurious RM. As might be expected, the quantity of secondary iron oxides produced by oxidation is limited by the iron content in the carbonate crystal lattice. Oxidized siderite produces significantly greater amounts of iron oxides than equivalent percentages of ankerite, which in turn produces more iron oxides than equal amounts of ferroan dolomite in a given sample.
This investigation was designed to study the impact of prolonged pacifier use on speech articulation. Three groups of children representing varying degrees of pacifier use ranging from little or none to 55 months were formed. Group 1 consisted of 30 children who had no or minimal history of pacifier use. Group 2 consisted of 16 children who had a history of pacifier use for up to 15 months. Group 3 consisted of 22 children who had a history of pacifier use that ranged from 18 to 55 months. Each child was administered the Goldman-Fristoe Test of Articulation-Second Edition (GFTA-2; R. Goldman & M. Fristoe, 2000). For purposes of this investigation, mean standard scores for each group were statistically compared. A one-way analysis of variance did not suggest that there were significant differences among the 3 groups. Implications for future study include more rigorous quantification of the style and brand of pacifier used, the extent of pacifier use, the inclusion of other forms of nonnutritive sucking, and the instrument and protocol for measuring speech articulation errors.
Rural pubic schools are mandated by federal and state laws to provide all necessary educational services for their constituents including the therapy services rendered by speech-language pathologists (SLP). However, due to extensive competition for these professionals in the last decade, rural public school administrators have experienced considerable difficulty in recruiting and retaining SLPs. The purpose of this investigation was to identify reasons why SLPs employed in rural public schools opt to remain in that employment setting. A 32 item questionnaire was developed and used to survey SLPs employed in rural public schools in a mid-south state. Of the 169 respondents, 93 reported having been employed in the same rural public school for four or more years. These 93 respondents were chosen as subjects for this investigation. Respondents chose the following seven factors as the most important reasons for continued public school employment: salary, vacation, support for continuing education, satisfaction with types of clients, caseload selection, the school's reputation for providing quality services, and relationships with other professional staff.
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