In this study, the causality relation between the economic confidence index and the real returns of financial investment instruments is discussed. Causality analysis of the real returns of US dollars and gold between 2007-2017 on the economic confidence index of the same date range was made with the Granger Causality Test and the data were analyzed in the EViews package program. According to the results, one-way causality was found between the US dollar real return and the economic confidence 23 index. Accordingly, the real effect of the dollar is the reason for the economic confidence index. There is also a negative correlation between these two variables. According to the analyzes, it is observed that the causality relationship between gold real return and economic confidence index is unidirectional. Accordingly, the real return of gold is the reason for the economic confidence index. The correlation analysis between these variables was positive.

While the general acceptance in the 1970s was that investors acted rationally, the fact that investment decisions could not be explained only with a rational approach began to come to the fore in the early 1980s. Studies conducted in this context have diversified to examine the internal and external factors on the decision-making processes of individuals on investment. Opinions on investor behavior, which are fed by social sciences such as psychology, marketing, and sociology, have revealed that many factors are effective in the decision-making process. In this context, one of the most weighted elements in the decision-making literature is emotions. Emotions, which are directly related to different environmental conditions, have shown that they are also effective in investor decisions this way. This research was conducted to examine the effect of weather conditions on investment decisions. Data on multidimensional investment elements have been collected over a wide period and their relationships with different weather conditions have been examined. As a result, it has been concluded that the most important parameters of the investments, the transaction volume, and the transaction amount, are related to the pressure, temperature, and humidity of the weather. Similarly, transaction returns were also found to be related to air temperature.

Amaç: Geleneksel finans teorilerinin açıklamakta yetersiz kaldığı piyasa anomalilerinin asıl sebebinin insan davranışları olduğu keşfedildiğinden bu yana davranışsal teorilere çevrilen gözler, şimdi de bu davranış hatalarının sebeplerini çok farklı disiplinlerde aramaya başlamıştır. Söz konusu insan davranışı olduğunda haklı görünen bu arayış, araştırmacıları disiplinler arası çalışmalara itmiş ve bu çalışmalar ise literatüre yeni kavramlar eklemiştir. Lollapalooza etkisi de bu kavramlardan biridir. Charles Munger tarafından ortaya konan bu kavram, insan davranışını etkileyen birden fazla önyargının bir arada görülmesiyle meydana gelen davranış anomalilerinin, beyni lapa haline dönüştüren sebebi olarak ifade edilebilir. Bu çalışmanın amacı, Lollapalooza etkisinin davranışsal ön yargılarının incelenmesinin yanı sıra, genişletilmiş bir Lollapalooza etkisi için genetik faktörlerin de kavrama dahil edilebilirliğini göstermektir. Bulgular: Çalışmanın sonuçlarına bakıldığında genetik bilginin ekonomik ve finansal kararların sebeplerinden biri olabileceği ortaya konmaktadır. Ayrıca literatürde psikolojik ve sosyolojik faktörlerin etkisi ile ortaya çıkan bilişsel hataların, tek tek ele alınıp sebepleri ve sonuçları ayrıntılı şekilde tartışılmış çok sayıda çalışmaya rastlansa da hepsinin birlikte ele alınmasının sebep ve sonuçlarının da araştırılması gerektiği ortaya konmuştur. Çalışmanın Önemi: Özellikle dopamin reseptör genlerin insan davranışıyla yakın ilişkileri bilindiğinden, bu genlerin finansal kararlarda lollapalooza etkisinin sınırlarını genişletebileceği açıktır. Bu sayede yatırımcı davranışının sebepleri ve sonuçlarının, sadece psikolojik olarak değil genetik ve hatta nörolojik olarak ta ele alınması gerektiği ortaya konmaktadır.

The tendency of an individual to share his beings with other people arises from the social aspect of human nature. Especially in today's conditions where the gap between advantageous and disadvantaged groups is getting deeper, donation is extremely important to reach a global level of welfare and to create fair living standards for all. Due to the stated priorities, donation behavior has an important place among both religious and moral values. However, the factors that lead an individual towards donation behavior are not only social rules. In addition to external factors, important internal factors such as emotions also play a big role in the donation decision. In addition, there are many variables such as the donated thing itself, total assets of the donor and indeed the characteristics of the donor. Donation behavior, which is widely examined in the literature, is also considered as an important decision making subject. In our study, the effects that motivate an individual towards a donation; along with the donation amount and the ratio of donation, were examined with framing heuristics which express the individual's knowledge of the victim. The mentioned variables were associated with stress as one of the strongest negative arousal output, to understand the emotional aspect of a donation decision. The stress levels of the participants, who manipulated by two different scenarios, were monitored with galvanic skin response to determine the decision-making scenarios which triggered stress. As a result; it has been found that the individual's effort to gain the money he donates and the features of the donation call significantly affect the decision.

One of the most important assumption of rational choice theory is that individuals are purely self-interested utility maximizers. However research in economics and other social sciences has found that people can also be irrational and their choices can also be taken with some heuristics and biases. Laboratory experiments have documented substantial heterogeneity in irrational preferences, but little is known about the origins of such irrational financial behavior. Especially in recent studies, it is seen that the inheritance estimates of these differences are investigated by using quantitative and molecular genetic methods. The main purpose of this study is to investigate the effects of dopamine and serotonin-related genes on financial decisions. For this purpose, genes associated with dopamine and serotonin were identified. Some of the studies investigating the effects of these genes on financial decision making process have been examined. Key words: Genoeconomics, Financial Decision, Dopamine, Serotonin, MAOA gene.