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I have an unpublished, unfinished PhD thesis investigating this question. I'm working on getting permission to publish it, but for now I can only give you the

I have an unpublished, unfinished PhD thesis investigating this question. I'm working on getting permission to publish it, but for now I can only give you the summary. The author administered standardised personality tests to people tested as fluently bi-lingual in English and German. Each of the four possibilities was tested. Everyone got both tests, some tested first in English, the others first in German. Each group had roughly equal numbers of those claiming English as their first language and those claiming German as their first language. The data showed two distinct types of behaviour. Some of those tested showed no personality shift at all, while others showed an unmistakable change. There were none who changed a little - either they did, or they didn't. It's been suggested that those who didn't change were, for example, compound bilinguals, whereas those who did were coordinates. Or vice versa. The conclusion was that a personality shift for some types of bilinguals is clear and unavoidable. I really hope I can get this material onto the web. ADDED IN EDIT: Separating the effects of cultural influences from those of the language itself is difficult, and the author of the thesis went to great lengths to look for changes based on the language. that's what makes this research so important (in my opinion). My next step is to contact the supervisor(s) of the candidate, but that's awkward. Working on it.

pradocchia 16y ago
I'd definitely fall into the coordinate bilingual w/ personality shift camp. I think, speak and act in one language or the other, and have difficultly translating, though my comprehension is fluent, like two hemispheres of the brain with impaired communication.
jacquesm 16y ago
Here's a bit of my experience to back up how hard it is to separate out the cultural aspect: The English singular 'you' has two words for it in German, 'sie' and 'du'. The first one is used in situations where there is some distance between the speakers, the second when they are (much) more familiar. It used to be fairly unheard of to hear a German 'subordinate' use 'du' to their superior, whereas in English it would be impossible to even express the difference. So in Germany workplace relationships tend to have a sense of distance between the various strata. Even if you didn't want to change your personality the simple fact that you'd address your superior in this way would make you behave differently (and so you would show a more deferential personality), because associated with that distance are a whole pile of other personal traits. It's not as strict as it used to be, but the difference is definitely still there.
- sparky 16y ago
  Same in Spanish ('usted' and 'tu', respectively).
  - shrikant 16y ago
    And in most Indian languages.
    - CWuestefeld 16y ago
      And French, "tu" (familiar singular) and "vous" (formal singular, or plural). English used to have "thou", but of course that's long since extinct.
      - antirez 16y ago
        In Italian is almost like that: "tu" (familiar) and "voi" (very formal) or "lei" (less formal)
        mitjak 16y ago
        And Russian.
        yread 16y ago
        And Czech. And Dutch
        iacvlvs 16y ago
        And Afrikaans: jy (familiar), u (ever so formal), but u is (or seems to be) falling out of common use.
        gokhan 16y ago
        And in Turkish. "Sen" ve "Siz".
321speak 16y ago
I would be very interested in this thesis, is there any way I could get an advance copy? it relates to my start-up, 321speak.com
- RiderOfGiraffes 16y ago
  No, sorry. As I say, it's unfinished, it's not mine, and I specifically don't have permission to disseminate it. I can talk about what I know from it, but I can't quote from it. You might email me with any specific questions and I'll answer them if I can.
baxter 16y ago
Does this relate at all to linguistic relativity?
Sukotto 16y ago
Why do you need permission to post your own writing? Do you sign some kind of NDA when you enter a phd program?
- RiderOfGiraffes 16y ago
  It's not mine, and it's a long story. The short version is that a chap I know - nowin his 70s - never finished his PhD. We were chatting about the SWH and linguistic relativism and he mentioned it. I asked to see it, he loaned it to me - with permission to copy - provided I never made any of it public. I'm slowly trying to persuade him that it wouldn't be a bad thing, but it's slow work. He also has the early symptoms of Alzheimer's, so it may never happen.
nikhilgk 16y ago
I think two other variables needs to be factored in: cultural influence of the native speakers of the languages and the age at which you acquire the. I can attest to the second factor because I learned four languages before I was six (typical if you grow up in India) and still use three of them almost every day and I do not feel any discernible personality change when I shift the language I speak or think in.

pradocchia 16y ago

I'd definitely fall into the coordinate bilingual w/ personality shift camp. I think, speak and act in one language or the other, and have difficultly translating, though my comprehension is fluent, like two hemispheres of the brain with impaired communication.

jacquesm 16y ago

Here's a bit of my experience to back up how hard it is to separate out the cultural aspect: The English singular 'you' has two words for it in German, 'sie' and 'du'. The first one is used in situations where there is some distance between the speakers, the second when they are (much) more familiar. It used to be fairly unheard of to hear a German 'subordinate' use 'du' to their superior, whereas in English it would be impossible to even express the difference. So in Germany workplace relationships tend to have a sense of distance between the various strata. Even if you didn't want to change your personality the simple fact that you'd address your superior in this way would make you behave differently (and so you would show a more deferential personality), because associated with that distance are a whole pile of other personal traits. It's not as strict as it used to be, but the difference is definitely still there.

sparky 16y ago
Same in Spanish ('usted' and 'tu', respectively).
- shrikant 16y ago
  And in most Indian languages.
  - CWuestefeld 16y ago
    And French, "tu" (familiar singular) and "vous" (formal singular, or plural). English used to have "thou", but of course that's long since extinct.
    - antirez 16y ago
      In Italian is almost like that: "tu" (familiar) and "voi" (very formal) or "lei" (less formal)
      - mitjak 16y ago
        And Russian.
        yread 16y ago
        And Czech. And Dutch
        iacvlvs 16y ago
        And Afrikaans: jy (familiar), u (ever so formal), but u is (or seems to be) falling out of common use.
        gokhan 16y ago
        And in Turkish. "Sen" ve "Siz".

321speak 16y ago

I would be very interested in this thesis, is there any way I could get an advance copy? it relates to my start-up, 321speak.com

RiderOfGiraffes 16y ago
No, sorry. As I say, it's unfinished, it's not mine, and I specifically don't have permission to disseminate it. I can talk about what I know from it, but I can't quote from it. You might email me with any specific questions and I'll answer them if I can.

baxter 16y ago

Does this relate at all to linguistic relativity?

Sukotto 16y ago

Why do you need permission to post your own writing? Do you sign some kind of NDA when you enter a phd program?

RiderOfGiraffes 16y ago
It's not mine, and it's a long story. The short version is that a chap I know - nowin his 70s - never finished his PhD. We were chatting about the SWH and linguistic relativism and he mentioned it. I asked to see it, he loaned it to me - with permission to copy - provided I never made any of it public. I'm slowly trying to persuade him that it wouldn't be a bad thing, but it's slow work. He also has the early symptoms of Alzheimer's, so it may never happen.

nikhilgk 16y ago

I think two other variables needs to be factored in: cultural influence of the native speakers of the languages and the age at which you acquire the. I can attest to the second factor because I learned four languages before I was six (typical if you grow up in India) and still use three of them almost every day and I do not feel any discernible personality change when I shift the language I speak or think in.