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Date:         Thu, 9 Jan 2003 08:31:27 -0700
Reply-To:     Susan Crawford <Susan.Crawford@calgaryhealthregion.ca>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Susan Crawford <Susan.Crawford@calgaryhealthregion.ca>
Organization: Calgary Health Region
Subject:      Re: Milliseconds
Comments: To: Raynald Levesque <rlevesque@videotron.ca>
Content-Type: text/plain; charset=us-ascii

Many thanks for solving the problem, Raynald! We really appreciate it!

Raynald Levesque wrote:

> Hi > > SPSS handles this without any problems: > > DATA LIST LIST /t1 t2 (2TIME13.3). > BEGIN DATA > 12:02:45.459 12:02:47.123 > 12:02:45.459 12:02:46.460 > 12:02:45.458 12:02:45.459 > END DATA. > LIST. > > COMPUTE delta=t2 - t1. > FORMATS delta(F8.3) t1 t2 (TIME13.3). > LIST. > > * This is the result of LIST: > T1 T2 DELTA > > 12:02:45.459 12:02:47.123 1.664 > 12:02:45.459 12:02:46.460 1.001 > 12:02:45.458 12:02:45.459 .001 > > HTH > > Raynald Levesque rlevesque@videotron.ca > Visit my SPSS Pages http://pages.infinit.net/rlevesqu/index.htm > > -----Original Message----- > From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU]On Behalf Of > Susan Crawford > Sent: January 8, 2003 6:13 PM > To: SPSSX-L@LISTSERV.UGA.EDU > Subject: Milliseconds > > We're doing a reaction time test for a new study, and the data from the > test comes out as a text file with two variables - the type of response > (correct, incorrect, false alarm, miss), and the time that the response > was made. We also have the time that the stimulus was displayed. > Here's an example of the time from the test: > 12:02:45.459 > > I need to take the difference between the display time and the response > time, but the researchers want to look at milliseconds. The only thing > that I can find in SPSS says that time is measured as: > hh:mm:ss.s > 01:02:34.75 > > I need another decimal place for the reaction time. Is there a way to > set this up, so I can calculate differences between the two times and > get the actual milliseconds? > > Many thanks for the help! > > -- > Susan Crawford, M.Sc. > Research Coordinator > Behavioural Research Unit > Alberta Children's Hospital > Phone: 943-7364 > > "Life is not measured by the number of breaths we take, but by the > moments that take our breath away."

-- Susan Crawford, M.Sc. Research Coordinator Behavioural Research Unit Alberta Children's Hospital Phone: 943-7364

"Life is not measured by the number of breaths we take, but by the moments that take our breath away."


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