Different Measure of Intelligence Peak at Different Ages

One potential concern with cross-sectional data is that it may be subject to cohort effects. Our findings in Experiment 2 are consistent with the possibility that people born in 1945 have unusually large vocabularies, people born in 1980 have unusually good working memory, and people born in 1990 have unusually fast processing speed. Such concerns can be mitigated by converging results from cross-sectional datasets collected at different times (Schaie, 2005). Here, we compared results derived...

 How to Improve Self-Control in Schools

Make school more demanding for all students In its coverage of U.S. secondary education, the popular press tends to focus on two relatively small groups: students headed for elite colleges (many of whom are under tremendous stress and pressure) and students at risk for dropping out (many of whom come from the most disadvantaged communities). These stories are important to tell, but they leave out the vast majority of students, who don't fall into either of these extremes. These high school st...

 Cognitive Load and Working Memory

The amount of information entering our consciousness at any instant is referred to as our cognitive load. When our cognitive load exceeds the capacity of our working memory, our intellectual abilities take a hit. Information zips into and out of our mind so quickly that we never gain a good mental grip on it. (Which is why you can’t remember what you went to the kitchen to do.) The information vanishes before we’ve had an opportunity to transfer it into our long-term memory and weave it i...

 The A not B Task

Emilie sits on her father's lap and excitedly stares at the shiny brass bell that the research assistant across the table is holding. Making sure Emilie is watching, the assistant places the bell into one of two matching wells in the table and then quickly covers both wells with identical cloths. Emilie is eager to grab the bell, as any eight-month-old would, but her father gently holds back her arms while the researcher distracts her with a funny face. After five seconds, Dad is signaled to ...