Educational evaluation plays an essential role in the education system and is an important means of assessing learners' achievement and improving the quality of education. Through
Why doesn't honey spoil easily even though it contains water? This article explains water activity, a measure of the free water in food, and how it is measured, the limits below wh
In psychology, impressions are considered a very important concept, and the first impressions we form of other people or things have a very powerful influence. These impressions gr
When you are walking down the street and see red lettering against a yellow background, a particular fast-food brand naturally comes to mind. When you see wording in a plain, restr
The law of diminishing marginal utility describes how the extra satisfaction from getting one more of something keeps shrinking. We look at what marginal utility means, how the ide
Why is one side of a mountain range lush and the other dry? Moist air rises up the windward slope and drops its rain, then sinks, warms, and dries on the leeward side. This piece c
The smartphones we use contain thousands, even tens of thousands, of files and apps. What would happen if photos, documents, and music files were all mixed together on a single scr
There is growing attention to the effects of interest rate hikes on the South Korean economy. A central bank's decision to raise interest rates can bring significant changes for co
The Zero Moment Point (ZMP) is the point under the feet where ground forces create no tipping moment, long used to judge whether a biped robot will fall. This piece covers the supp
Coined by industrial designer Raymond Loewy, the MAYA principle says a design should be as advanced as possible while staying within what people can accept. This article covers Loe
Why does your appetite come back for dessert even when you feel too full to eat another bite? This article explains sensory-specific satiety: what it is, the brain and evolutionary
When two people face each other in conversation on screen, we never lose track of who is sitting where, thanks to a filmmaking convention known as the 180-degree rule. This article