2. The Rhetoric of Market Efficiency: How Data Analysis Became Legitimate

This book weaves together historical narrative and quantitative bibliometric data to detail the path financial economists took in order to form one of the central theories of financial economics—the influential efficient-market hypothesis—which states that the behavior of financial markets is unpredictable. As the notorious quip goes, a blindfolded monkey would do better than a group of experts in selecting a portfolio of securities, simply by throwing darts at the financial pages of a newspaper. How did such a hypothesis come to be so influential in the field of financial economics? How did financial economists turn a lack of evidence about systematic patterns in the behavior of financial markets into a foundational approach to the study of finance? Each chapter focuses on these questions, as well as on collaborative academic networks, and on the values and affects that kept the networks together as they struggled to define what the new field of financial economics should be about. In doing so, the book introduces a new dimension—data analysis—to our understanding of the ways knowledge advances.

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The changing market efficiency of the Nairobi securities exchange

Banks and Bank Systems ◽

10.21511/bbs.11(2).2016.07 ◽

2016 ◽

Vol 11 (2) ◽

pp. 70-80 ◽

Cited By ~ 1

Author(s):

Josephine M. Njuguna

Keyword(s):

Data Analysis ◽

Market Efficiency ◽

Test Period ◽

Ratio Test ◽

Variance Ratio ◽

Analysis Method ◽

Data Analysis Method ◽

Variance Ratio Test ◽

Year 2000

This paper tests for market efficiency changes of the Nairobi Securities Exchange (NSE) after the year 2000 and determines whether technological advancements have led to an increase in the market efficiency. The data that are used are the NSE 20 share index over the period, January 2001 to January 2015 and the NSE All Share Index (ASI) from its initiation, in February 2008 to January 2015. The data analysis method applied is the variance ratio test. The study finds that the market efficiency of the NSE has increased over the test period which suggests that advancement in technology has contributed to the increase in the market efficiency of the Kenyan market. Therefore, the findings of the study are in line with the Adaptive Market Hypothesis (AMH) for the NSE

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The Rhetoric of Market Efficiency

The Ascent of Market Efficiency ◽

10.7591/cornell/9781501750373.003.0002 ◽

2020 ◽

pp. 29-59

Author(s):

Simone Polillo

Keyword(s):

Data Analysis ◽

Market Efficiency ◽

Financial Economics ◽

Early Stage ◽

Its Analysis ◽

Stylistic Changes

This chapter presents an empirical characterization of affect-laden networks in the context of financial economics. It points out how other disciplines will generate different affective dispositions and how its analysis on financial economics provide a set of sensitizing concepts with which to identify these dispositions. The chapter also focuses on two debates from an early stage of financial economics and uses this comparison to highlight how stylistic changes and the emergence of a standard of reasonability helped settle conflicts within the discipline and turn data analysis into the apex of what became the data–method–theory triad. Financial economists developed this mode of constructing credible arguments where data analysis played a new role by the late 1970s. It explains how data analysis should be reasonable rather than exact or objective and how these methods should be simple and easily derived from the existing analytical toolkit of statistics.

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Microchemical imaging in biomedical research

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100130225 ◽

1992 ◽

Vol 50 (2) ◽

pp. 1118-1119

Author(s):

P. Ingram

Keyword(s):

Data Analysis ◽

Electron Probe ◽

The Other ◽

X Ray ◽

Cell Element ◽

Physiological Information ◽

Functional States ◽

Elemental Maps ◽

Electron Energy Loss ◽

Secondary Ion

It is well established that unique physiological information can be obtained by rapidly freezing cells in various functional states and analyzing the cell element content and distribution by electron probe x-ray microanalysis. (The other techniques of microanalysis that are amenable to imaging, such as electron energy loss spectroscopy, secondary ion mass spectroscopy, particle induced x-ray emission etc., are not addressed in this tutorial.) However, the usual processes of data acquisition are labor intensive and lengthy, requiring that x-ray counts be collected from individually selected regions of each cell in question and that data analysis be performed subsequent to data collection. A judicious combination of quantitative elemental maps and static raster probes adds not only an additional overall perception of what is occurring during a particular biological manipulation or event, but substantially increases data productivity. Recent advances in microcomputer instrumentation and software have made readily feasible the acquisition and processing of digital quantitative x-ray maps of one to several cells.

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Perceptions of a Collaborative Professional Learning Program: Seeing the “Bigger Picture”

Perspectives of the ASHA Special Interest Groups ◽

10.1044/2019_persp-19-00041 ◽

2020 ◽

Vol 5 (1) ◽

pp. 290-303

Author(s):

P. Charlie Buckley ◽

Kimberly A. Murza ◽

Tami Cassel

Keyword(s):

Data Analysis ◽

Professional Learning ◽

Social Communication ◽

Special Educators ◽

Service Providers ◽

Integrative Approach ◽

Theory Approach ◽

Learning Program ◽

Speech Language Pathologists ◽

Related Service

Purpose The purpose of this study was to explore the perceptions of special education practitioners (i.e., speech-language pathologists, special educators, para-educators, and other related service providers) on their role as communication partners after participation in the Social Communication and Engagement Triad (Buckley et al., 2015 ) yearlong professional learning program. Method A qualitative approach using interviews and purposeful sampling was used. A total of 22 participants who completed participation in either Year 1 or Year 2 of the program were interviewed. Participants were speech-language pathologists, special educators, para-educators, and other related service providers. Using a grounded theory approach (Glaser & Strauss, 1967 ) to data analysis, open, axial, and selective coding procedures were followed. Results Three themes emerged from the data analysis and included engagement as the goal, role as a communication partner, and importance of collaboration. Conclusions Findings supported the notion that educators see the value of an integrative approach to service delivery, supporting students' social communication and engagement across the school day but also recognizing the challenges they face in making this a reality.

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Communicative Performance of Adolescents with Severe Speech Impairment

Journal of Speech and Hearing Disorders ◽

10.1044/jshd.5403.403 ◽

1989 ◽

Vol 54 (3) ◽

pp. 403-421 ◽

Cited By ~ 7

Author(s):

Beth M. Dalton ◽

Jan L. Bedrosian

Keyword(s):

Data Analysis ◽

Peer Interactions ◽

Consistent Pattern ◽

Clinical Implications ◽

Speech Impairment ◽

Communication Mode ◽

Mode Function ◽

Communicative Performance ◽

Therapy Room ◽

Communication Board

The communicative performance of 4 preoperational-level adolescents, using limited speech, gestures, and communication board techniques, was examined in a two-part investigation. In Part 1, each subject participated in an academic interaction with a teacher in a therapy room. Data were transcribed and coded for communication mode, function, and role. Two subjects were found to predominantly use the speech mode, while the remaining 2 predominantly used board and one other mode. The majority of productions consisted of responses to requests, and the initiator role was infrequently occupied. These findings were similar to those reported in previous investigations conducted in classroom settings. In Part 2, another examination of the communicative performance of these subjects was conducted in spontaneous interactions involving speaking and nonspeaking peers in a therapy room. Using the same data analysis procedures, gesture and speech modes predominated for 3 of the subjects in the nonspeaking peer interactions. The remaining subject exhibited minimal interaction. No consistent pattern of mode usage was exhibited across the speaking peer interactions. In the nonspeaking peer interactions, requests predominated. In contrast, a variety of communication functions was exhibited in the speaking peer interactions. Both the initiator and the maintainer roles were occupied in the majority of interactions. Pertinent variables and clinical implications are discussed.

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