3.3 Non-target effects

Treisman's feature integration theory has been very influential, but it does not appear to explain all experimental observations, and there have been alternative accounts of the feature-binding process. Duncan and Humphreys (1989) reported effects which do not fit too well within the basic Treisman account. They required participants to search for the letter ‘L’ (the target) within a number of ‘Ts’ (the non-targets). You may get a feel for the relative difficulty of d
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Licensed under a Creative Commons Attribution - NonCommercial-ShareAlike 2.0 Licence - see http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ - Original copyright The Open University

Some Dinosaur Groups Diminishing Before Mass Extinction: Live Chat with Museum Scientists
On May 10, the American Museum of Natural History and Wired Science hosted a live webcast discussion about new research on dinosaur extinction. The study shows that some dinosaur groups were already on the decline around the time an asteroid hit at the end of the Cretaceous. Brandon Keim, an associate editor at Wired Science, moderated the discussion with two of the paper's co-authors: Mark Norell, chair of the Museum's Division of Paleontology, and Steve Brusatte, a Columbia University graduat
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Elsherbeni Receives Distinguished Research and Creative Achievement Award
Atef Elsherbeni named the fifth recipient of the UM Distinguished Research and Creative Achievement Award. Video by Mary Stanton.
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Justices of the Peace, Carmarthenshire (2)

The National Archives UK posted a photo:

Justices of the Peace, Carmarthenshire (2)

Description: From Justices of the peace, Carmarthenshire: address to Queen Victoria on her Golde
Author(s): nobody@flickr.com (The National Archives UK)

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Follow Your Dreams - The story of an Arab with Altitude (UCL Global Citizenship Lecture)
The lecture, Follow Your Dreams: The story of an Arab with Altitude is given by His Excellency Sheikh Mohammed bin Abdulla Al Thani, the first Qatari to climb Mount Everest in May 2013. With a team of Arabs that named their private group "Arabs with Altitude", Sheikh Mohammed was accompanied throughout his adventurous two-month quest to reach the top of the world by his friends; Raed Zidan, the first Palestinian man to summit Mount Everest, Masoud Mohammad, Raha Muharrak, who became the first S
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BLOSSOMS - Why the Honeycomb of Beehives Has a Hexagonal Shape (English Subtitles)

Teacher: Fatma Al-Qatani
Presenter: Amjad Al Nour

Summary: Beavers are generally known as the engineers of the animal world. In fact the beaver is MIT's mascot!  But honeybees might be better engineers than beavers!  And in this lesson involving geometry in interesting ways, you'll see why!  Honeybees, over time, have optimized the design of their beehives.  Mathematicians can do no better.


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20.104J Chemicals in the Environment: Toxicology and Public Health (BE.104J) (MIT)
This course addresses the challenges of defining a relationship between exposure to environmental chemicals and human disease. Course topics include epidemiological approaches to understanding disease causation; biostatistical methods; evaluation of human exposure to chemicals, and their internal distribution, metabolism, reactions with cellular components, and biological effects; and qualitative and quantitative health risk assessment methods used in the U.S. as bases for regulatory decision-ma
Author(s): Sherley, James,Green, Laura,Tannenbaum, Steven

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

Rwanda marks 20th anniversary of genocide with vigil
Subscribe: http://smarturl.it/reuterssubscribe April 7 - Rwandan president leads nation with a candlelight vigil to commemorate victims of the country's genocide 20 years ago. Deborah Lutterbeck reports. Subscribe: http://smarturl.it/reuterssubscribe More Breaking News: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financ
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Cosmonauts install antenna at International Space Station
Subscribe: http://smarturl.it/reuterssubscribe Russian cosmonauts on International Space Station install communications equipment in 6-hour spacewalk aired by NASA TV. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More Breaking News: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financ
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The Gold Standard Never Dies

John Maynard Keynes thought he had pretty well killed gold as a monetary standard back in the 1930s. Governments of the world did their best to help him. It took longer than they thought. Gold in the money survived all the way to Nixon, and it was he who finally drove the stake in once and for all. That was supposed to be the end of it, and the beginning of the glorious ne
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Freelance Journalism
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Franklin Roosevelt Dedicates Museum of Modern Art
On May 10, 1939, President Franklin D. Roosevelt delivers a dedication speech for New York's Museum of Modern Art as the new establishment opens its doors. (1:48)
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120 vragen rond seks
Schermafbeelding_2012-05-30_om_19.53.37.png

Seks is voor leerlingen soms een gevoelig onderwerp. Om hun kennis hierover te verruimen vind je een lijst met 120 vragen die misschien kunnen helpen om het ijs te breken bij de start van dit thema.


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Johannesburg: an LBS student's view
London Business School MBA students film their South African journey from their point of view as they help local entrepreneurs with the challenges they face as small businesses in an emerging market.
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Dr. Peter Berry - Keynote
20th Annual John K. Friesen Conference - 2011 Growing Old in a Changing Climate: Exploring the Interface Between Population Aging and Global Warming Dr. Peter Berry Senior Policy Advisor, Health Canada, Climate Change and Health Office, Ottawa, ON, Canada
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Queen Victoria's Diamond Jubilee (1897) - extract
In 1897 Queen Victoria celebrated her 60th year as monarch. A spectacular event was staged in London with a processional route lined with troops from all corners of the Empire and millions of the Queen's subjects. It was the media event of the decade, and the pioneer filmmakers fought for the best positions. A large number of their films survive and are preserved in the BFI National Archive, including this sequence which has been restored with its original tinting. Look out for Queen Victoria he
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Property Means Preservation

[This article originally appeared in the Free Market. You can subscribe by becoming a member.]

To the minds of most environmentalists, the ham-hand of government is needed to protect wildlife. Private property be damned — the government mus
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pH-verloop bij een titratie m.b.v. een Pasport-sensor : Practicum
pH_meting.jpg

In dit practicum tracht je inzichten te verwerven in:

  • het verloop van de zuurtegraadveranderingen, bij toevoeging van een sterk zuur aan een sterke base;
  • het verloop van geleidbaarheidsveranderingen, …

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Chem 1B (Spring 2012): Free Energy and Review Problems
Spring Quarter 2012, Lecture 12 for Chem 1B: General Chemistry recorded on Tuesday, May 15. Items covered: free energy and some review problems.
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