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Effects Of Divided Attention On Speech In Parkinson's Disease, Melissa Inkley
Effects Of Divided Attention On Speech In Parkinson's Disease, Melissa Inkley
Theses and Dissertations
The effects of divided attention on speech in Parkinson's disease (PD) have been studied for a variety of tasks in recent years. Much of the previous research studied gait patterns while participants concurrently performed another task. There have been few studies regarding the effects of divided attention on speech in individuals with PD. The ability to communicate effectively relies in part on an appropriate rate of speech, vocal intensity, and fundamental frequency control. This study included 27 participants: 8 with PD, 12 neurologically healthy older (HO) adults, and 7 healthy younger (HY) adults. Each participant was given a list of …
Effects Of Conversational Modalities On Driving And Speaking Performance, Katy Glenn
Effects Of Conversational Modalities On Driving And Speaking Performance, Katy Glenn
Theses and Dissertations
The purpose of this study was to examine the bidirectional effects of simulated driving and conversations using different speaking modalities. Participants included 30 males and 30 females with no history of speech, language or hearing disorders. The participants were divided into three age groups: 20s, 40s, and 60s. They completed a driving simulation task in isolation and also while speaking on a hand-held or hands-free cell phone or with a passenger in the car. Speech measures included speaking time ratio, mean, and standard deviation of intensity, as well as mean and standard deviation of fundamental frequency in semitones. Driving measures …
Bidirectional Interference Between Simulated Driving And Speaking, Kelsey Lynn Simmons
Bidirectional Interference Between Simulated Driving And Speaking, Kelsey Lynn Simmons
Theses and Dissertations
The purpose of this study was to examine interference between concurrently performed speaking and driving tasks. Participants included 60 adults, 30 males and 30 females, with no history of communication disorders. They were divided into three different age groups of 20 participants each: younger (20s), middle-aged (40s), and older (60s). The participants were given a list of topics to consider and were instructed to select eight topics that they could talk about; they completed five practice trials of the driving simulator prior to the experimental recording to eliminate practice effects. Each participant completed the speaking task and driving task both …
The Effect Of Age On Speech Motor Performance During Divided Attention, Dallin J. Bailey
The Effect Of Age On Speech Motor Performance During Divided Attention, Dallin J. Bailey
Theses and Dissertations
The present study examined the divided attention effects of three non-speech tasks on concurrent speech motor performance. These tasks targeted linguistic, cognitive, and manual motor activity. Participants included 60 healthy adults separated into three different age groups of twenty participants each: college-age (20s), middle-aged (40s), and older adults (60s). Each participant completed a speech task once in isolation and once concurrently with each of the three non-speech tasks: a semantic decision task, a quantitative comparison task, and a manual motor task. The non-speech tasks were also performed in isolation. The speech task involved repeating a target phrase each time a …
Effects Of Syntactic Complexity On Speech Motor Performance, Kelsey Lewis Boyce
Effects Of Syntactic Complexity On Speech Motor Performance, Kelsey Lewis Boyce
Theses and Dissertations
This study evaluated the possible influence of linguistic demands on speech motor control by measuring articulatory movement stability during conditions of increasing grammatical complexity. There were 60 participants in three age groups: 20-30 years, 40-50 years, and 60-70 years, with equal numbers of men and women in each group. These speakers produced 10 repetitions of five different sentence or phrase conditions. These five conditions included two baseline measurements and three sentences of varying complexity. Each complexity condition had an MLU count of 23, word length of 17, syllable length of 25, and contained the phrase open boxes of pompoms. …
The Effects Of Task Preference On Speech And Motor Performance Under Divided Attention Conditions, Amy Sue Leiter
The Effects Of Task Preference On Speech And Motor Performance Under Divided Attention Conditions, Amy Sue Leiter
Theses and Dissertations
Dual task performance and the interaction of tasks has been the subject of much research. When tasks are performed together they affect each other to varying degrees depending upon such factors as the similarity of the tasks, their difficulty, and whether one task is given preference over another. In this study, task preference was investigated under divided attention conditions in order to determine what effect preference had on task performance. Twenty young adults took part in this study and were randomly assigned into two groups. Each group was experimentally motivated to favor one of the two tasks – either speaking …