Spring 2017
L541 Lab – Week 8
1.Outline
A.Study Design
B.Laryngeals and phonation contrast
C.WASL
D.Homework 8
2.Study Design
A.Conceptualization phase
i.Observation
ii.literature review
iii.formulate hypothesis
iv.research questions
v.etc.
B.Design phase
i.Overall design
1.What are the conditions in the study?
2.What are your variables?
a.Dependent, independent, controlled?
i.E.g. 2 voicing contrasts X 2 vowels = 4 combinations (bat, pat, bit, pit)
3.What is your subject design?
a.Independent measures
i.Two groups with different conditions
ii.Pro: Avoids order effects
iii.Con: Requires more subjects
4.Repeated measures
a.One group participates in two conditions
b.Counterbalancing
i.Group 1 does condition A B
ii.Group 2 does condition B A
ii.Subject group(s)
1.Justify why you chose this language group
a.Typically this will be explained in the introduction when you describe the linguistic problem you are investigating
iii.Material (corpus)
1.Provide a detailed description of the phonological structure of your materials
2.Why did you choose such a structure for your materials
3.Provide a list of complete materials in the Appendix
iv.Experimental paradigm
1.What tasks are you going to use?
2.What is your rationale for using this paradigm?
3.What will subjects do in these tasks?
v.Procedure
1.Provide details about the whole experiment session
2.Wherewilltheexperiment/datacollectionbeconducted?
3.Step-by-step sequence of tasks
4.Recording equipment/setup
5.Instructions
6.Totalamount of timeneeded
vi.Technology
1.Production
a.Praat scripts
b.Extract labeled files
c.Measurementextraction
2.Powerpoint for stimulus presentation
a.Controlled presentation
b.Possible to randomize
3.Perception
a.Praat perception experiments (e.g. vowel practice)
b.PsychoPy
3.Laryngeals and phonation contrasts
A.UCLA Phonetics Lab Data
i.Stops in Hindi and Sindhi
ii.Breathy and creaky vowels inMazatec, Gujarati, and !Xóõ
B.Take some time to get familiar with these sounds
4.WASL
A.Pick up where we left off last week with WASL
5.Homework 8
A.Hindi transcription on Canvas
B.Conceptualize data presentation
i.What kind of data will your group collect?
ii.How could you present this data graphically?
1.xy plot
2.Boxplot
3.Linegraph
4.Would a table be superior for some reason?
C.Get creative: can you summarize your data in an attractive and intuitive way?
i. Weusuallyliketoshowcentraltendenciesand a degreeofvariation
ii.How could you best show this in your graph?
iii.What other kinds of information would you like to convey?
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