During a typical morning, Colin checks the clock frequently (frequency of time) before being reinforced with confirmation that the time for his regularly scheduled lunch break has arrived. In this case, Colin's behavior is reinforced on a schedule."

fixed-interval    

Explanation:

Fixed-interval schedule is considered as one of the four distinct types of reinforcement schedule in the operant conditioning theory which was introduced by B. F. Skinner. A fixed-interval schedule is referred to as a reinforcement schedule whereby the very first or initial response is being rewarded once a 'specified time amount' has been passed or elapsed.

In this case, Colin's behavior is reinforced on a fixed-interval schedule.

elizabeth loftus conducted a study to observe the reliability of eyewitnesses during the 1970s. their baseline was to define how accurate are the recollections of eyewitnesses.

her studies do not support the use of eyewitness. loftus mentions in her work that we are not required to recall some experiences, meaning that rarely an individual eyewitness testimony is trustworthy. a good example is presented in her work, where all individuals watched a video and were than asked "about how fast were the cars going when they hit/smash? ". the testimonies changed based on the word she used to make the question (hit or smash), proving the fragility.

"social stratification refers to the way people are ranked and ordered in society. in western societies, stratification is primarily seen and understood as a result of socioeconomic status, which produces a hierarchy in which access to resources, and possession of them, increases from the lower to the upper strata"