[Psych3120] work tests

[Kyle Hansen]

I have been reading many of the messages posted about color 
blindness why people have it, why males have it more often 
than females, and my question concerning colorblindness is:
Why is it important for employers  to have there new hires 
take color blindness tests?   I can understand it maybe if 
the person applying for the job is completely colorblind, 
in that they only see black and white. But why does it 
matter if you can determine between a dark navy blue and a 
black.  Is that really going to affect your job performance 
that much?  Anyone with answers to this question I would 
really appreciate it.