homework

POLI 100F Section 1: An Introduction to Social Networks

Gregoire Phillips

University of California, San Diego

[email protected]

September 30, 2020

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Overview

1 Social Networks

2 Layout of the Course

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What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook LinkedIn Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook LinkedIn Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook LinkedIn Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook

LinkedIn Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook LinkedIn

Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook LinkedIn Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

Social networks describe connections built on social interactions and personal relationships

Range from complex chains of interconnection to simple, dyadic relationships

Find them in obvious places

Facebook LinkedIn Twitter

Gregoire Phillips (UCSD) Social Networks September 30, 2020 3 / 28

What is a social network?

We can also find them in less obvious places

Our romantic relationships Families Households

Figure: A child’s rendering of their home network

Gregoire Phillips (UCSD) Social Networks September 30, 2020 4 / 28

What is a social network?

We can also find them in less obvious places Our romantic relationships

Families Households

Figure: A child’s rendering of their home network

Gregoire Phillips (UCSD) Social Networks September 30, 2020 4 / 28

What is a social network?

We can also find them in less obvious places Our romantic relationships Families

Households

Figure: A child’s rendering of their home network

Gregoire Phillips (UCSD) Social Networks September 30, 2020 4 / 28

What is a social network?

We can also find them in less obvious places Our romantic relationships Families Households

Figure: A child’s rendering of their home network

Gregoire Phillips (UCSD) Social Networks September 30, 2020 4 / 28

What is a social network?

We can also find them in less obvious places Our romantic relationships Families Households

Figure: A child’s rendering of their home network

Gregoire Phillips (UCSD) Social Networks September 30, 2020 4 / 28

What is a social network?

The simplest network is a dyad, or pair of individuals

Sometimes, these dyads agglomerate to form large, interconnected web structures

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What is a social network?

The simplest network is a dyad, or pair of individuals

Sometimes, these dyads agglomerate to form large, interconnected web structures

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How do we talk about social networks?

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Degree

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Degree

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Centrality

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Centrality

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Transitivity

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Transitivity

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Employment Network

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Connected, Ch.1

Fowler & Christakis provide three illustrative examples of networks in action in the Ch.1 of Connected:

The bucket brigade

The telephone tree

The military squad

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Bucket Brigade

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Bucket Brigade

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Bucket Brigade

Linear ties

Mutual ties (both directions)

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Bucket Brigade

Linear ties

Mutual ties (both directions)

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Telephone Tree

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Telephone Tree

Directional

Exponentially reduces steps of process

Creates “cascade”

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Telephone Tree

Directional

Exponentially reduces steps of process

Creates “cascade”

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Military Squad

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Military Squad

Tightly interconnected groups

Two-way tie between all members

Intraconnections within > interconnections between

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Military Squad

Tightly interconnected groups

Two-way tie between all members

Intraconnections within > interconnections between

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Studying Social Networks

Three examples of a ubiqituous feature of human life

Social networks have fairly consistent structures that we will recognize over time

This course will survey these networks across a host of different topics

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Studying Social Networks

Modules in this course

1 Introduction to and mechanics of social networks

2 Social networks in behavior and health

3 Social networks in our political and social lives

4 Social networks in our economic systems and protests

5 Social networks in social media

Gregoire Phillips (UCSD) Social Networks September 30, 2020 23 / 28

Studying Social Networks

Modules in this course

1 Introduction to and mechanics of social networks

2 Social networks in behavior and health

3 Social networks in our political and social lives

4 Social networks in our economic systems and protests

5 Social networks in social media

Gregoire Phillips (UCSD) Social Networks September 30, 2020 23 / 28

Studying Social Networks

Modules in this course

1 Introduction to and mechanics of social networks

2 Social networks in behavior and health

3 Social networks in our political and social lives

4 Social networks in our economic systems and protests

5 Social networks in social media

Gregoire Phillips (UCSD) Social Networks September 30, 2020 23 / 28

Studying Social Networks

Modules in this course

1 Introduction to and mechanics of social networks

2 Social networks in behavior and health

3 Social networks in our political and social lives

4 Social networks in our economic systems and protests

5 Social networks in social media

Gregoire Phillips (UCSD) Social Networks September 30, 2020 23 / 28

Studying Social Networks

Modules in this course

1 Introduction to and mechanics of social networks

2 Social networks in behavior and health

3 Social networks in our political and social lives

4 Social networks in our economic systems and protests

5 Social networks in social media

Gregoire Phillips (UCSD) Social Networks September 30, 2020 23 / 28

Course Objectives

Three simple course objectives

1 Learn how social networks shape our lives

2 Use this knowledge to investigate new topics

3 Apply this knowledge to a novel research question

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Course Objectives

Three simple course objectives

1 Learn how social networks shape our lives

2 Use this knowledge to investigate new topics

3 Apply this knowledge to a novel research question

Gregoire Phillips (UCSD) Social Networks September 30, 2020 24 / 28

Course Objectives

Three simple course objectives

1 Learn how social networks shape our lives

2 Use this knowledge to investigate new topics

3 Apply this knowledge to a novel research question

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No Complex Mathematics Required!

NO mathematical pre-requisites

A simple understanding of statistics in social science might be helpful, but we will review how to read academic articles together

If you are more interested in network mathematics, you can explore an advanced topic in your final project

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Grading

Three grade categories

1 Participation (10%)

2 Discussion Questions (30%)

3 Final Project (60%)

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Discussion Question Format

Three questions designed to engage with concepts learned in the course. We will grade these on:

1 Clarity

2 Completeness

3 Analysis

4 Formatting

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Discussion Question Format

Three questions designed to engage with concepts learned in the course. We will grade these on:

1 Clarity

2 Completeness

3 Analysis

4 Formatting

Gregoire Phillips (UCSD) Social Networks September 30, 2020 27 / 28

Discussion Question Format

Three questions designed to engage with concepts learned in the course. We will grade these on:

1 Clarity

2 Completeness

3 Analysis

4 Formatting

Gregoire Phillips (UCSD) Social Networks September 30, 2020 27 / 28

Discussion Question Format

Three questions designed to engage with concepts learned in the course. We will grade these on:

1 Clarity

2 Completeness

3 Analysis

4 Formatting

Gregoire Phillips (UCSD) Social Networks September 30, 2020 27 / 28

Final Project Format

Research proposal project with the following components:

1 Research Question

2 Relevant Literature

3 Theory

4 Testable Hypotheses

5 Research Design

6 Importance of your Empirical Results (or empirical results if you have them)

You will have two check ins during the quarter, so start thinking about what you might be interested in working on early!

Gregoire Phillips (UCSD) Social Networks September 30, 2020 28 / 28

Final Project Format

Research proposal project with the following components:

1 Research Question

2 Relevant Literature

3 Theory

4 Testable Hypotheses

5 Research Design

6 Importance of your Empirical Results (or empirical results if you have them)

You will have two check ins during the quarter, so start thinking about what you might be interested in working on early!

Gregoire Phillips (UCSD) Social Networks September 30, 2020 28 / 28

Final Project Format

Research proposal project with the following components:

1 Research Question

2 Relevant Literature

3 Theory

4 Testable Hypotheses

5 Research Design

6 Importance of your Empirical Results (or empirical results if you have them)

You will have two check ins during the quarter, so start thinking about what you might be interested in working on early!

Gregoire Phillips (UCSD) Social Networks September 30, 2020 28 / 28

Final Project Format

Research proposal project with the following components:

1 Research Question

2 Relevant Literature

3 Theory

4 Testable Hypotheses

5 Research Design

6 Importance of your Empirical Results (or empirical results if you have them)

You will have two check ins during the quarter, so start thinking about what you might be interested in working on early!

Gregoire Phillips (UCSD) Social Networks September 30, 2020 28 / 28

Final Project Format

Research proposal project with the following components:

1 Research Question

2 Relevant Literature

3 Theory

4 Testable Hypotheses

5 Research Design

6 Importance of your Empirical Results (or empirical results if you have them)

You will have two check ins during the quarter, so start thinking about what you might be interested in working on early!

Gregoire Phillips (UCSD) Social Networks September 30, 2020 28 / 28

Final Project Format

Research proposal project with the following components:

1 Research Question

2 Relevant Literature

3 Theory

4 Testable Hypotheses

5 Research Design

6 Importance of your Empirical Results (or empirical results if you have them)

You will have two check ins during the quarter, so start thinking about what you might be interested in working on early!

Gregoire Phillips (UCSD) Social Networks September 30, 2020 28 / 28