The initial economic collapse which resulted in the Great Depression can be divided into two parts: 1929 to mid-1931, and then mid-1931 to 1933. The initial decline lasted from mid-1929 to mid-1931. During this time, most people believed that the decline was merely a bad recession, worse than the recessions that occurred in 1923 and 1927, but not as bad as the Depression of 1920-21. Economic forecasters throughout 1930 optimistically predicted an economic rebound come 1931, and felt vindicated by a stock market rally in the spring of 1930.