What Is the Difference in Accounting between the Cost and Equity Methods?

Logical Corporation, a producer of medical products, disclosed the following investments in affiliates in the notes to its July 31, 2008, financial statements:

 

2008

2007

Investments (if classified as available for sale)

$ 822,188

$ 50,000

Investments (if using the equity method)

1,677,181

2,009,647

Discuss the factors that determine whether Logical uses the cost or the equity method in accounting for its investment in affiliates. What events are recorded when the security is accounted for as an available for sale security? What events are recorded when the equity method is used? What does the investment account represent when the security is classified as available for sale? What does it represent using the equity method?