Iowa State Fair Authority, October 31, 2003

State Agency Audit Report - Independent Auditor's Reports Basic Financial Statements and Supplementary Information

Iowa Water Pollution Control Works and Drinking Water Facilities Financing Programs (Joint Programs of the Iowa Finance Authority and the Iowa Department of Natural Resources), Independent Auditor's Reports Financial Statements and Supplemental Information Schedule of Findings, June 30, 2003

State Agency Audit Report

2004 Annual Report of the Iowa Railway Finance Authority

Annual report for Iowa Railway Finance Authority. Annual Report produced by Iowa Department of Transportation.

Iowa Lottery Authority (Previously known as the Lottery Division of the Department of Revenue and Finance), Independent Auditor's Reports, Basic Financial Statements and Supplementary Information, Schedule of Findings, June 30, 2004

State Agency Audit Report

Iowa State Fair Authority, Independent Auditor's Reports, Basic Financial Statements and Supplementary Information, Schedule of Findings, October 31, 2004

State Agency Audit Report - Special Investigation

Iowa Water Pollution Control Works and Drinking Water Facilities Financing Programs, (Joint Programs of the Iowa Finance Authority and The Iowa Department of Natural Resources), Independent Auditor's Reports, Financial Statements and Supplemental Information, June 30, 2004

State Audit Reports

Iowa Lottery Authority, Independent Auditor's Reports, Basic Financial Statements and Supplementary Information, Schedule of Findings, June 30, 2005

State Audit Reports

Iowa Finance Authority Performance Report, FY 2004

Agency Performance Report

Celebrating Our Past...Embracing Our Future, Iowa Lottery Authority Annual Report, Fiscal Year 2005

Iowa Lottery Authority Annual Report, Fiscal Year 2005

2001 Annual Report of the Iowa Railway Finance Authority

Railway finance report for the Iowa Department of Transportation.

2005 Annual Report of the Iowa Railway Finance Authority

Annual report for Iowa Railway Finance Authority. Annual Report produced by Iowa Department of Transportation.

Iowa State Fair Authority, Independent Auditor's Reports, Basic Financial Statements and Supplementary Information, Schedule of Findings for the Year Ending October 31, 2005

Audit report of the Iowa State Fair Authority for the year ending October 31, 2005

Iowa State Fair Authority, Independent Auditor's Reports, Basic Financial Statements and Supplementary Information, Schedule of Findings, October 31, 2005

State Audit Reports

Great River Regional Waste Authority, Auditor of State's Report, For the Period July 1, 2002 through June 30, 2003, and Selected Activity through June 30, 2005

Other Audit Reports

Reputation based on punishment rather than generosity allows for evolution of cooperation in sizable groups

Cooperation among unrelated individuals can arise if decisions to help others can be based on reputation. While working for dyadic interactions, reputation-use in social dilemmas involving many individuals (e.g. public goods games) becomes increasingly difficult as groups become larger and errors more frequent. Reputation is therefore believed to have played a minor role for the evolution of cooperation in collective action dilemmas such as those faced by early humans. Here, we show in computer simulations that a reputation system based on punitive actions can overcome these problems and, compared to reputation system based on generous actions, (i) is more likely to lead to the evolution of cooperation in sizable groups, (ii) more effectively sustains cooperation within larger groups, and (iii) is more robust to errors in reputation assessment. Punishment and punishment reputation could therefore have played crucial roles in the evolution of cooperation within larger groups of humans.