The most important unit of representation of knowledge in long-term memory is a concept. Concepts are mental categories for objects and events, which are similar to each other in one or in more than one way. Concepts once formed get organised in categories — a category itself is a concept but it also functions to organise similarities among other concepts based on common features. For example, the word mango is a category because different varieties of mangoes can be subsumed within it and it is also a concept within the category of fruit.
Concepts may also There are many ways in which memory is measured experimentally. Since there are many kinds of memories, any method appropriate for studying one type of memory may not be suited for studying another. The major methods which are used for memory measurement are being presented here : a) Free Recall and Recognition (for measuring facts/episodes related memory) : In free recall method, participants are presented with some words which they are asked to memorise and after some time they are asked to recall them in any order. The more they are able to recall, the better their memory is.
In recognition, instead of being asked to generate items, participants see the items that they had memorised along with distracter items (those that they had not seen) and their task is to recognise which one of those they had learnt. The greater the number of recognition of ‘old items’, better is the memory. b) Sentence Verification Task (for measuring semantic memory) : As you have already read, .