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The purpose of this paper is to investigate the use of humor in university classrooms in Qatar. This paper also seeks to highlight the positive impact of humor on learning and creativity.

Using two different surveys, 101 Qatar University business students, mostly accounting and finance majors, are asked to rate different statements about the use of humor in university classrooms.

Students are overwhelmingly in favor of the use of humor. They think that most professors do not use it to enhance learning. On the other hand, they do not want extreme forms of humor; they would rather see a lighthearted approach where the professor is formal but yet approachable and relaxed. Finally, it appears that finance students have a higher appreciation for humor compared with accounting students.

Using humor in the classroom is one aspect of learning that has been ignored by college education research in the area. University professors can dramatically increase the quality of learning by offering their students a pleasant environment.

The purpose of this paper is to investigate how best to diversify in Saudi Arabia's stock market.

The analysis proceeds as follows: first, repeated sampling with replacement from a sample of 62 actual companies' monthly stock returns from January 2001 to June 2006 is used to simulate the performance of various portfolio sizes; second, a modified Statman diversification model is used to evaluate the performance of index funds in Saudi Arabia and thus assess the size of a diversified portfolio.

This paper reaches two important findings: first, due to high index funds fees, investors are better off diversifying by purchasing stocks directly from the stock market; second, a portfolio containing five randomly chosen stocks is sufficient to achieve diversification.

This paper provides useful recommendations on how to achieve diversification. Additionally, it highlights the fact that index funds are too expensive to be useful in Saudi Arabia.

The purpose of the paper is to attempt to shed light on whether the use of general indexes may mask sectoral efficiencies by investigating the random walk (RW) and weak‐form efficiency (WFE) hypotheses in the equity markets of Jordan, Qatar, Saudi Arabia, and the United Arab Emirates.

The paper applies the multiple variance ratio test and the runs test to each equity market's weekly general and sectoral indexes.

The paper provides evidence of inconsistencies in three of the five analyzed equity markets when testing the RW hypothesis and in four of the five analyzed markets when testing the WFE hypothesis.

The findings in this paper provide empirical evidence supporting the use of sectoral indexes in lieu of general indexes in equity market analyses. These results have important financial and policy implications and would be of interest to investors, financial managers, and policy makers.