The pregenual anterior cingulate cortex on the other hand is only responsive to the presence of an immediate reward. All these areas are associated with activity in response to an immediate reward. McClure's dual-system model claims that these brain areas are impulsively triggered by immediate benefits and not so much by future rewards. Future rewards do not activate emotion- and reward-processing areas as much, because people tend to downgrade future benefits in respect of available immediate benefits. The medial prefrontal cortex, pregenual anterior cingulate cortex and ventral striatum show different activity patterns, depending on whether the choices lead to an immediate reward or a future reward for oneself. This is not the case if these decisions affect another individual, which implies that more patience and less self-focus is involved in self-irrelevant decision-making. People who consider their present and future self as more alike also exhibit more patience when choosing a reward. Activity in the ventral striatum, medial prefrontal cortex, orbitofrontal cortex, pregenual anterior cingulate cortex and posterior cingulate cortex is associated with an immediate reward merely being available for oneself. All these areas, which are also part of the rostral limbic system, build a network connected to the expectation and the gain of immediate gratification. The dorsal anterior cingulate cortex, posterior cingulate cortex and precuneus get activated more if the rewards is immediate and less when the reward is available in the future, regardless of whether it effects the individual itself or another person. The ventral striatum gets activated both when an individual personally decides for an immediate reward, as well as when an individual watches someone else making that decision for them. It is responsive to both the likelihood of getting an anticipated reward as well as its size. It also plays a role in evaluating after a choice has been made. The medial prefrontal cortex is responsible for self-related attention and judgement, for example comparing the self to someone else. These evaluations take place even if the individual has not made the choice themselves. The ventral part of the medial prefrontal cortex, just like the ventral striatum, evaluates the outcome also after the decision was made. The pregenual anterior cingulate cortex is a structure located close to the corpus callosum, which plays a role in positive emotions and responds to success reward when gambling. This brain area is playing a role in reflection on the self and emotions. Delayed gratification is the ability to not give in to immediate rewards and instead strive for the more beneficial future rewards.