Book chapters will be unavailable on Saturday 24th August between 8am-12pm BST. This is for essential maintenance which will provide improved performance going forwards. Please accept our apologies for any inconvenience caused.
To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure email@example.com
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Different terms have described quick responding, processing speed, cognitive speed, psychometric speed, and perceptual speed. Methodology derived from speeded tasks assumes that cognitive processes intervening between stimulus and response can at least be relatively isolated by appropriate manipulation of experimental conditions. The most comprehensive body of data assembled to test the theory that processes responsible for speed on elementary cognitive tasks (ECTs) are the same as those responsible for complex intelligent actions from Jensen's studies of simple and choice reaction times (RTs). Although the extent to which inspection time (IT) and RT measure the same or different processes is still an open question, there is compelling evidence that correlation between IQ and processing speed estimated by IT or choice RT reflects shared genetic influences. There is considerable evidence that white matter lesions are associated with slower processing speed and poorer performance on tests of attention and memory.