General aims
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- examine whether /s/ retraction takes place before /r/ and other clusters
in a variety where it has not yet taken hold
- examine role of gender


General
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s/S in a neutralising context

Verschiedene Varietäten in Am.Engl.
Kraljic et al, 2008; Labov, 2001; Rutter, 2011; 

in Neuseeland und einige britischen Varietäten
Cruttenden, 2014; Lawrence, 2000; Warren, 1996

/s/-retraction diachron in deutsch, aber nicht vor /r/ (und der /r/ ist sowieso
kein post-alveolarer Approximant
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Vorhersagen aus Ohala
Sibilanten in /str/ sind rückverlagert
Hörbar und wenn nicht im Kontext, identifizierbar als /S/
Der Lautwandel in 

Phonetische Grundlagen davon
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entfernte Assimilation; oder /t/ auch rückverlagert?
eventuell weil [ɹ] lippengerundet ist
/tr/ in 'train' ist eigentlich tʃ

wie sieht es aus mit 
/spr, skr, sp, st, sk/

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Assimilation processes in English can involve categorical differences for some speakers (e.g. Ellis & Hardcastle, 2002; Nolan, Holst, & Kühnert, 1996 on consonant place assimilation) and the question of whether /s/- retraction involves a categorical or a gradient change remains open (cf. in particular Rutter, 2011).
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Männlich/weiblich
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mehr s-Rückverlagerung in Frauen?

Braidwood, New South Wales, ca 1000 Einwohner, 300 km südwestlich
 von Sydney

Aufnahmen
any ----

20 Sprecher, 10 Wörter, 10 Wiederholungen
L1 Austr. englisch, monolingual, aus Braidwood
7 M, 13 F


Perzeption
spliced out the sibilant and prepended it to –eet, which enables a forced choice between phonological /s/ and /ʃ/ (with listeners choosing between SEAT and SHEET
Twenty two first language Australian English speakers (thirteen female, nine male; age range 20-49 years) completed the perception experiment


Conclusion
(1) incomplete normalization in perception
for inherent gender differences, 


gender is not normally thought to play a role in the very earliest stages of sound change.

 this study shows evidence that an effect of gender can emerge without any change in speech production behaviour (as far as can be determined based on one acoustic parameter) because the tendency towards M1-lowering in /str/ was common to men and women in production