Decisions are indispensable in our lives，But in some cases，Especially for complex decisions，Not only involves multiple goals、Uncertainty、Time dynamic、Competitive，And the personal ability is far from reaching the requirements，At this time, you need to give full play to the collective wisdom，A multiplayer participates in decision analysis。For this，Group decision -making has been recognized by more and more decision makers because of its unique advantages。At the same time，The disadvantages of group decision -making are also obvious。So，What factors affect group decision -making? One of the essential factor is social classification。

Social classification is according to needs、Self -identity、Values, etc. divide the group into two or more categories of the group，For example, black and white、Men and women。Due to social classification, some characteristics of people have the characteristics of people as individuals，From this we can see that when making group decisions，People will consciously draw themselves into a certain group，that is, "internal group" and "outer group"。Therefore, Bet365 app download when allocating resources and evaluating the group，members of the group often allocate more resources for their own groups，At the same time, it will also make more positive groups、Active evaluation，and the external group produces exclusion psychology。So，Understanding the characteristics of group decisions under different classification conditions helps us better manage the group and make useful decisions。

Choose 80 college students to participate in this experiment。Select the standard as a right -handed hand、No red and green blind、Normal vision or correctional vision，and have not participated in similar experiments。The experimental preparation phase uses NALBANDOV's created group situation event materials，and design the E-PRIME experimental program to present group situation event materials。Social classification uses the way of imaginary people to achieve。Specific experiments use 2 (imaginary nation: Garme family，Honky family) × 3 (Decision Framework: Support、Opposition、Defense) hybrid experiment design。During the experimental process，Each pair of trials to get the role of the ethnic member of the nation in accordance with the method of grabbing，Then enter the formal experiment。The experimental process is: "+" gaze point (center presentation，time limit 1000ms) → Event decision bet365 best casino games -making → behavioral feedback → return feedback。After carefully reading every incident that has no time limit after reading,，Make "opposition", "support", "defense" three types of behavior selection，Press the number key 1 correspondingly、2 and 3 to record，Until the completion of all group incident decisions that play the nation played。

Experimental program records The frequency of decision -making of the subject，As a variable for this experiment。During the processing data processing process，Remove incomplete、An error test occurs during the experimental process，Finally obtained 78 valid data。Calculate the group situation event behavior decision -making score: Calculate the test of the 24th group situation event decisions, respectively, select opposition、Support、Frequency of three behaviors of defense，As three groups of behavioral decision -making indicators。Analysis of the experimental results as follows。

Repeat the measuring square variance analysis through the behavioral decision indicators of different false nations，The results show that the interaction of different imaginary nations and behavioral decisions is not significant，Explanation when making decisions，Group decision -making behavior has high consistency。and the main effect of behavioral decision -making bet365 live casino games indicators is significant，Further LSD statistical analysis of behavioral decision -making indicators obtained results，Support behavior indicators (m = 12.02，SD = 3.25) greater than opposition behavior indicators (m = 6.45，SD = 2.83) and defense behavior indicators (m = 5.57，SD = 3.03)。Through the inside、Outsidal behavior decision indicators for repeated measurement variance analysis，Get the result、Outer group behavioral decision -making indicators are significant。Internal group behavioral power indicators Multi -weight average comparison display，Support behavior indicators (m = 7.35，SD = 2.25) is significantly greater than defense behavior indicators (m = 2.04，SD = 1.59) and indicators of opposition (m = 2.61，SD = 2.07)，and there is no significant difference between defense behavior indicators and opposition behavior indicators; external group behavioral power indicators are significantly significant，Further analysis found，Support behavior indicators (m = 4.67，SD = 2.17) greater than defense behavior indicators (m = 3.54，SD = 2.07) and Opposition Decision Indicators (m = 3.82，SD = 1.59)，There are no significant differences between defense behavior indicators and opposition behavior indicators。Results，When individuals make behavior decisions，There is a bias for decision -making for internal group behavior and behavioral decision -making behavior bet365 best casino games against foreign groups。

This study discusses the characteristics of group incident behavior decision -making characteristics under the conditions of social classification，It is found that the overall decision -making has consistent bias，Decision characteristics of internal group bias and opposition to foreign groups，The decision -making behavior of individuals support the nation is significantly higher than decision -making support for foreign nations，Decision -making behavior of opposition and defense foreign nation is significantly higher than opposition、Defense of the behavior of the nation。Specific speaking，That is, under national classification conditions，Even if people do not know each other，When making decisions, you will still be divided into your own group more resources，Give positive、Active evaluation，and foreign groups will allocate less resources and give negative evaluations。

According to this, we can speculate，After social classification，Even if this identity is the surface、short，Decisions will also get the same conclusion。In short，Use social classification processing information to simplify the world for humans、The cognitive world has an important role。Through the identity of the group through individuals、The homogeneity of members Bet365 app download and the group，People will consciously use gender、National、Age and other social categories complete self -category from the influence of stereotypes，After that, people will follow the sense of recognition、The sense of belonging refers to the group where you are "internal group"，Refer to the relative group as "outer group"，and through continuous efforts to make the similarity with the inner group get higher and higher，"Internal Group Preferences" often produce "internal group preferences" when making decisions。Such support bias decision，Often make the group make irrational choices，From this we can interfere with social classification、Confusion classification and other methods to promote group decision -making。

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(Author Unit: Department of Education, Education, Yunnan Normal University、Ministry of Psychology, Southwest University)