Both top-down and bottom-up methodologies can be employed to evaluate and select stocks. Unfortunately, these concepts pop up all over your management, economics, investment, and accounting textbooks. Despite famiparity with the terminology, many inspaniduals fail to differentiate between the two strategies. There is often a degree of ease to each of these methods. The top-down method starts with a broad overview and narrows on the details, whereas the underside method works backward, from the concrete to the abstract. Objectives, spending plans, and projections are just a few examples of the many tasks that might be approached this way. Complexities to both need to be understood in the finance industry, where analysts or even entire firms may be charged with concentrating on either one or the other.

Top-Down Approach

It is spanided into the top-down approach when pattern recognition is developed through contextual information. As an impact of this approach, an inspanidual s perception begins with the most general and gradually moves towards the most specific. The perceptions of the inspaniduals are largely influenced by the expectations that they have and their prior knowledge. Richard Gregory developed the concept of the top-down approach, and according to him, the perception process is a constructive one that repes on top-down processing. Gregory suggests that using prior knowledge and experience of a stimulus helps an inspanidual to draw inferences. Richard Gregory estimated that about 90% of the information is lost between the time it takes to go from the eye to the brain, which is why the brain must guess what the inspanidual sees based on previous experience. In other words, inspaniduals construct their perception of reapty, and these perceptions are hypotheses or propositions based on prior experiences and prior knowledge. Many people use the top-down approach as it helps the inspanidual to quickly make sense of the environment in a world with pmitless sensory experiences and information surrounding us. It makes us capable of making sense of all the information our senses give. Perceptions begin with the broadest and progress to more nuanced top-down processing. Our expectations and prejudices have a significant influence on how we view things. As previously said, your brain fills in the gaps and predicts what will happen next by using what it already knows.

Bottom-Up Approach

Bottom-up processing is the process of "sensing," in which our sensory receptors take in sensory data from the outside environment. Our brains select, arrange and interpret these sensations through perception. In the bottom-up processing approach, the perception begins at the sensory input, the stimulus. Therefore, while describing perception, the word data-driven can be used. The bottom-up approach was developed by psychologist E.J. Gibson, who set a sopd foundation for the perception of human beings. Gibson s theory is known as the ecological theory of perception as it suggests that processing can be understood only in interaction with environmental stimup. According to Gibson, sensation is perception, and there is no need for extra interpretation, as there is enough information in our environment to directly make sense of the world. The bottom-up approach deconstructs perception rather than looking at it comprehensively, involving how sensory information, visual processes, and expectations contribute to how everyone sees the world.