Research and write about the psychologist Leon Festinger and his theory of cognitive dissonanceExplain the theory with an example. Mention an experience when youconsciously or unconsciously, modified your behavior or to reduce the feelings of dissonance (for example, justifying something you did or bought, which you may have had second thoughts about). Alsoresearch and write about Festinger's social comparison theory, and discuss upward and downward social comparison Provide examples from your own life where you engaged in this comparison process to assess yourself in comparison to others. Please answer quickly!!!

In 1964, Festinger moved from social psychology to research on visual perception. ... His social psychological research concerned how people resolve conflict (group dynamics), ambiguity (social comparison), and inconsistency (cognitive dissonance)—all manifestations of pressures for uniformity. Festinger's theory proposes that inconsistency among beliefs or behaviours causes an uncomfortable psychological tension (i.e., cognitive dissonance), leading people to change one of the inconsistent elements to reduce the dissonance or to add consonant elements to restore consonance.

Leon Festinger was one of the most important figures in modern psychology and contributed several theories that are still important today for our understanding of the communication process, particularly the individual's exposure to communication and processes of opinion formation and judgment

Explanation:

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.