Add BrightSurf on Google Email

How the carrot approach facilitates learning

Researchers discovered that rewarding correct decisions can enhance brain function in the cortex and improve learning. Targeted manipulation of dopamine levels may lead to new possibilities in treating patients after a stroke or improving cognitive abilities.

SourcePLOS·JournalPLOS Biology·DateJul 27, 2009

Ants more rational than humans

Researchers at Arizona State University and Princeton University found that ants can accomplish a task more rationally than humans due to their collective decision-making process. By minimizing individual mistakes, the 'wisdom of crowds' approach emerges, leading to more accurate outcomes.

Breast cancer: To screen or not to screen?

Researchers found that breast cancer screening's life-saving benefit gradually increases with age, but the majority of women do not need regular mammograms to save lives. The study estimated that around 1 in 5,000 women will be saved by screening between ages 40-59.

SourceBMC (BioMed Central)·JournalBMC Medical Informatics and Decision Making·DateApr 1, 2009

London murders: Stats theory shows numbers are predictable

A recent report by Professor David Spiegelhalter suggests that London's murder numbers follow a predictable pattern, with certain aspects being statistically expected. The study found that the number of murders in London is not unusually high and has remained stable over the past five years.

SourceWiley·JournalSignificance·DateMar 17, 2009

Why we hate politics

Leading experts Colin Hay and Gerry Stoker say politics has become 'depoliticised' due to key decisions being handed over to independent bodies. They argue that politicians have lost trust in their ability to govern effectively and in the collective interest, leading to a disenchantment with the conduct of politics.

Evidence appears to show how and where frontal lobe works

A Brown University study found that the frontal lobe controls decision-making along a continuum from abstract to concrete, with damage affecting higher-level functions but not lower ones. The research suggests specific areas of the frontal cortex are required for different levels of abstract decision-making.

SourceBrown University·JournalNature Neuroscience·DateMar 2, 2009

New models question old assumptions about how many molecules it takes to control cell division

Researchers at Virginia Tech have created a mathematical model to explore the roles of noise in controlling DNA replication and cell division. The study reveals flaws in two accepted notions about information processing in single cells, suggesting that the average number of mRNA molecules must be much larger than previously thought.

SourceVirginia Tech·JournalProceedings of the National Academy of Sciences·DateFeb 24, 2009

Director experience with acquisitions improves firm performance

A new study in Strategic Management Journal examines how outside directors' prior experience influences a firm's acquisitions. The study finds that firms with experienced directors make better acquisition decisions, especially when the acquired products are similar to those being pursued by the firm.

SourceWiley·JournalStrategic Management Journal·DateJan 7, 2009

Eyes on the prize

New brain-imaging research from UC San Diego finds that visual areas respond more strongly to objects of value, altering neural activation in the human visual system. This altered processing affects not only high-level cognitive function but also early stages of information processing.

Fish choose their leaders by consensus

Stickleback fish follow a consensus decision-making process to choose their leader, prioritizing size, fatness, and health. As group size increases, accuracy improves, but occasional errors occur due to submission to peers and cascades of incorrect decisions.

SourceCell Press·JournalCurrent Biology·DateNov 13, 2008

Simple brain mechanisms explain arbitrary human visual decisions

Scientists report that a simple decision-making task does not involve the frontal lobes, instead relying on the parietal lobe to process sensory information and control responses. This finding challenges the traditional view of human decision-making as willful acts, suggesting that many decisions may be driven by automatic processes.

SourceWashU Medicine·JournalNature Neuroscience·DateNov 9, 2008