stimulus location

[David McFarlane]

You should take this up with your graduate advisor, and consult the 
relevant psychology research textbooks.  This is not a question about 
E-Prime, it is a question about visual acuity and its effect on 
psychology experiments in general, and your experiment in particular. 
No one here can tell whether or not 2.5 degrees of visual angle will be 
detrimental to your particular experiment.  So I repeat, please take 
this to your graduate advisor.

-- David McFarlane, Professional Faultfinder


On Tue 3/30/2010 ashraf wrote:
> I'm sorry, I'm not a native English speaker , my first Arab.
> My question is about the suitable radius of a circle of letters to be
> seen very well from the perspective of visual acuity.
> 
> 
> On 30 مارس, 18:07, Michiel Spape <Michiel.Sp... at nottingham.ac.uk>
> wrote:
>> Sorry, I missed a line in there!
>>
>> "visual angle from fixation will seen Quit poorly,Is this mean ,that"
>>
>> Though it didn't really affect the conclusion.
>>
>> Michiel Spapé
>> Research Fellow
>> Perception & Action group
>> University of Nottingham
>> School of Psychology
>>
>>
>>
>> -----Original Message-----
>> From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of Michiel Spape
>> Sent: 30 March 2010 16:47
>> To: e-prime at googlegroups.com
>> Subject: RE: stimulus location
>>
>> Your inline would work better if you correct the syntax:
>>
>> Hi group,
>> I read in the e-prime user guide, in appendix B on page 34 - considering the stimulus location - that displaying a circle at a visual angle of 2.5 degrees from a central fixation letter, its radius must be greater than 2.5 degrees. Otherwise, it will not be suitably large enough to study attention.
>>
>> ...but I might be completely wrong in thinking this is what you're saying. If, however, it is, the answer is, as Jens says, no. To expand on that, it makes little sense from a psychological point of view. Since I find it unlikely you were asking this, however, I'll not go much farther than Jens and will merely ask you, again, to take a course in English and/or (presumably and) install a spelling check on your system. My apologies if this sounds pedantic, I'm not being a spelling-nazi, it's just that your wording can only be understood by someone with para-semantic skills
>> Best,
>> Mich
>>
>> Michiel Spapé
>> Research Fellow
>> Perception & Action group
>> University of Nottingham
>> School of Psychology
>>
>> -----Original Message-----
>> From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of ashraf
>> Sent: 30 March 2010 04:27
>> To: E-Prime
>> Subject: stimulus location
>>
>>  ,hi groub,I red
>>    in e-prime user Guide In appendix B,consideration in research
>> about   Stimulus Location P.34 that ,a letter displayed 2.5 degrees of
>> visual angle from fixation will seen Quit poorly,Is this mean ,that
>> any circle of stimilus in e-prime,its radius greater than2.5  degrees
>> of visual angle will not be suitable to study attention

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