Answer and Explanation:
The halo effect can be understood as the individual's tendency to generalize one particular quality of something to their overall perception of a said particular thing.
For example, John met Judy last Saturday. Judy was well-dressed, looked tidy, neat and beautiful. John just talked with Judy for about 5 minutes that day. When asked about Judy by one of his coworkers on Monday morning, John said that he thought that Judy was very intelligent, charismatic and an overall incredible individual, when in fact John's perception about Judy was a consequence of the "halo" effect. Her good looks made John create a positive perception of Judy.
To consumers, usually, when a product looks shiny, pricey and overall very well made, they tend to assume that the product is good, even if the general performance of the product is mediocre.