April 14, 2010
A recent paper set out to examine automobile driving skills in people who had previously used Ecstasy (presumptively 3,4-methylenedioxymethamphetamine; MDMA) but were currently not using. Dastrup and colleagues (2010) used a driving simulator task in which the job was to maintain a set distance behind a lead vehicle (LV) displayed on the computer screen. The job was to stay abut two car lengths (given as 18 meters) behind the LV while accelerating to 55mph.
My Google U conversion calculation makes 55 mph out to be about 25 meters / sec. I would therefore estimate the closing time between the cars as about 0.4-0.5 seconds, depending on car length and how much space you assume between these lengths. Thereafter the LV changed speed as depicted in the Figure 2 from the paper.
The horizontal line sits at the 55 mph point and you can see that the speed of the LV varies up to about 59 mph and down to about 51 mph with the maximum change taking place over about 18-20 seconds. .
April 22, 2008
A mnemonic device can be described as:
…a memory aid. Mnemonics are often verbal, something such as a very short poem or a special word used to help a person remember something, particularly lists. Mnemonics rely not only on repetition to remember facts, but also on associations between easy-to-remember constructs and lists of data, based on the principle that the human mind much more easily remembers insignificant data attached to spatial, personal, or otherwise meaningful information than that occurring in meaningless sequences.
February 25, 2008
In the midst of World War I, Wolfgang Köhler conducted a famous series of experiments to investigate problem solving ability in chimpanzees. The lasting impression of these experiments, reinforced by just about every introductory Psychology text, was Köhler’s assertion that the chimps demonstrated “insightful” learning.
Did they now?
January 31, 2008
We had a prior discussion on cognitive performance doping led by the BM on the old site. This was sparked by a Nature commentary which followed a prior editorial.
Nature now has a web poll going asking you to opine on cognitive enhancers. From Retrospectacle:
Brenden Maher at Nature emailed me this morning to clue me in on an anonymous survey that their editors are doing on the topic of cognitive enhancers (a spawn of the commentary piece on the same subject a few weeks back.)
If you’d like to take the survey, check it out here.