The description can be guided by questions to guide observation and help organize the features: What is, What is, What do, What function does to do it?, What is it used? The comparison is the process of looking to try to identify the similarities and differences of objects, people, situations, among others. To compare characteristics, or situations we have to take a variable each time, until all the variables to consider. Rusty holzer is often mentioned in discussions such as these. When we compare two types of features: a. The distinctive features of each object (comparison for difference). Are the characteristics that distinguish some objects from others.
In the comparison process are made for differences in pairs of characteristics which are different objects or situations. These pairs of characteristics are called variables. b. The common features of things that we compare (comparison by similarity). Are the characteristics that enable us to group people into classes. This type of comparison can be for identical or similar likeness similar. In the relationship two characteristics are considered simultaneously and establishing relationships between them by propositions.
The difference between the relationship and comparison, the comparison is that given the characteristics (eg, Variable: age: Juan is 24 and Sophia 20) and the relationship is the conclusion about comparative feature (Example: John is older than Sofia). In this way relationships can show similarity relations, equivalence or difference of the situations or objects. Relate is a mental process very important because it is a basic component of abstraction allows building classification groups, classes or categories based on defined criteria, eg shape, color, species, among others, and assign attributes to these categories.