This research aims to study 1) personal characteristics that affect the purchasing behavior of consumers in convenience stores in Nong-Don District Saraburi province and 2) retail market factors that affect the purchasing behavior in convenience stores in Nong-Don District Saraburi province. The sample group used in the research consisted of 400 people in Nong Don District Saraburi province. The instrument used for data collection was a questionnaire. The statistics used for data analysis were percentage mean standard deviation a statistical significance test with a value of 0.05. The results of the research are that 1) most of the sample groups were female aged 21-25 years with status occupation student a monthly income less than or equal to 10000 Baht and an education level below bachelors degree. 2) Furthermore factors influenced the purchasing behavior in convenience stores. Overall the average score was at the highest level. The process had the highest average score followed by the product and distribution physical characteristics personnel and marketing communications. The aspect with the least average score was the price. 3) Shopping behavior in convenience stores was analyzed by hypothesis testing. It was found that different sexes had different purchasing behavior in convenience stores in Nong-Don District Saraburi province. It was significantly different at the 0.05 level and age marital status occupation monthly income educational backgrounds. The different is consumers purchasing behavior in convenience stores in Nong-Don District Saraburi province were significantly different at the 0.05 level. Retail market factors like products price distribution marketing promotion personnel process and physical appearance affect the purchasing behavior in convenience stores in Nong-Don District Saraburi province.

The purposes of this research were 1) to study the purchasing behavior of readyto- drink coconut juice. 2) To study the marketing factors of ready-to-drink coconut juice of consumers. 3) To study the relationship between personal factors and behavior in purchasing ready-to-drink coconut juice and 4) to study the relationship between marketing factors and purchasing behavior of ready-to-drink coconut juice. This was a quantitative research using questionnaires as a tool to collect data from a sample of 400 people without gender who are 20 years of age or older and live in Bangkok. The statistics used in the data analysis consisted of percentage mean standard deviation and correlation was determined by chi-square statistical test. The results showed that 1) most consumers behaviors had a reason to choose ready-to-drink coconut juice as a healthy drink with a purchase frequency of 1-2 times per week. The amount of purchase per time is at 1 bottle / box / bag which the purchase cost per time is 51- 100 baht and most of them choose to buy products from convenience stores. 2) The overall marketing factors in purchasing ready-to-drink coconut juice of the sample group were at the highest level. When considering the factors by aspect they were found that almost all aspects had the highest level of opinion in terms of price products and distribution channels respectively. Except for marketing promotion it was found that the sample group had a high level of opinion. 3) The relationship between personal factors and behavior in purchasing ready-to-drink coconut juice found that gender was related to the purchase frequency and the cost of each purchase. The education level was related to the reason for the purchase purchase frequency and cost of each purchase. Age occupation and average monthly income were related to all aspects of purchasing behavior which were the reason for purchase frequency of purchase location of purchase quantity of each purchase and cost of each purchase were found to be (P ≤ 0.01) and 4) the relationship between marketing factors and purchasing behavior of ready-to-drink coconut juice found that the overall marketing factors were related to behavior in all aspects which were the reason for purchasing purchase frequency purchase location quantity of each purchase and each purchase cost were found to be statistically (P ≤ 0.05)

The purposes of this research were to 1) investigate personal factors of consumers in Bangkok after the outbreak of Coronavirus 2019 (COVID-19) 2) study information awareness in the widespread Coronavirus 2019 (COVID-19) 3) find out the new normal style of consumers’ behaviors in food purchasing options in Bangkok after the Coronavirus 2019 (COVID-19) epidemic 4) study the relationship between personal factors and the new normal style of consumers’ behaviors in food purchasing options in Bangkok after the outbreak of Coronavirus 2019 (COVID-19) and 5) examine the relationship between information awareness of the Coronavirus 2019 (COVID-19) outbreak and the new normal style of consumers’ behaviors in food purchasing options in Bangkok after the Coronavirus 2019 (COVID-19) outbreak. The sample was 400 consumers in Bangkok who were selected by stratified sampling. The research instrument used in this study was the questionnaire. The statistical analysis used in this study included frequency percentage means and chi square. The results of the study were as follows: 1) for personal factors of consumers in Bangkok most of them were female (222 participants) whose ages ranged from 20-30 years old. Their education was lower than bachelors level. Their occupations were company employees/private employees with an average income from 10001 to 20000 baht per month. 2) Regarding the awareness of the Coronavirus 2019 (COVID-19) pandemic the results showed that most of the consumers received main sourcesof information from the Ministry of Public Health family members and television channel. 3) In addition to the new normal style of purchasing food options the results reported that most consumers preliminary examined their readiness health check before going out to buy or use any services. The majority of consumers selected restaurants in the department stores buying a la carte for example meat rice and curry fried chicken bakery products instant noodles frozen meats and various Thai desserts. These consumers spending money less than 500 baht bought these products by themselves and making their own decisions. 4) Personal factors including gender and education level were correlated with the new normal style of consumers’behaviors in foods purchasing option with statistically significant at the .05 level. 5) For the outbreak information sources the informants reported that the widespread Coronavirus 2019 (COVID-19) was correlated to the new normal style of consumers’ behaviors in food purchasing options with statistically significant at the .05 level.

The purposes of this research were: 1) to study the personal factors of consumers for choosing local restaurants in Phuket Province 2) to study the consumption factors of local restaurants in Phuket Province 3) to study the factors of marketing mix in the local restaurants in Phuket Province 4) to compare the level of importance of the marketing mix factors in the local restaurants in Phuket Province classified by personal factors of respondents 5)to compare the level of importance of the marketing mix factors in the consumers use of local restaurants in Phuket Province classified according to the use of local restaurants and 6) to present guidelines for local restaurant development in Phuket Province. A sample group of 400 people and local restaurant operators in Phuket has 16 cases. The research instruments are questionnaires and interviews. The statistical techniques used for data analysis were frequency percentage mean standard deviation one-way analysis of variance and analysis of descriptive data. The research found that: 1) most consumers were female aged 36-40 years with a bachelors degree being a private company employee with an estimated income of 10001–20000 baht and they resided in Phuket. 2) As for the reasons of choosing to use local restaurants it was found that most of the consumers chose to consume local food because of their unique identity and difference from conventional food. The most common food consumed was Hokkien fried noodles. The main course and side dishes commonly being consumed was Stir Fried Liang Bai with Shrimp Roe and a popular savory snack was Hu Shae sweet snacks were using Gosui and a popular dessert was Oh Aew. Most people consumed local food once a month and was paying approximately 901- 1300 baht for each meal. 3) Consumers valued the overall marketing mix at a high level. The determinants were in descending order local food price construction personnel and physical presentation and distribution service marketing promotion. 4) Comparing the level of importance of the marketing mix factors in consumers’ selection of local restaurants in Phuket Province found that gender age education level occupation monthly average income and different residences put importance on the factors of marketing mix with no difference except the gender was not different with statistical significance at the .05. 5) Comparing the level of importance of the marketing mix factors in consumers’ selection of local restaurants in Phuket Province found that the reasons for consuming local food popular types of local food popular local food items frequency of local food consumption and the cost of consumption per time were different. Paying attention to the factors of marketing mix there was no statistically significant difference at the .05 level. And 6) guidelines for local restaurant development in Phuket Province were to select raw materials directly from the producer sources in order to maintain freshness and quality. In addition a standard price threshold should be set and suitable for the quality of local food and so do distribution channels. There could be an online order and advertising through various media such as websites or other media in order to disseminate customers to know more about restaurants. In addition there should be a focus on training employees to recognize the importance of service and on educating employees about service skills. At the same time the restaurants should be designed to be unique easy to remember and technology should be adopted for example in the matter of receiving food orders to achieve accuracy speed and error prevention.

The purposes of this study were to compare demographics to making purchasing decisions to Japanese skincare products of female consumers in Bangkok and study the marketing communications affected the buying decision Japanese skincare products of female consumers in Bangkok. This research was the quantitative research by using questionnaires from 384 female consumers who previously purchased the product by uses the multi-stage sampling method. The data was analyzed by as frequency percentage mean standard deviation t-test statistic One-Way ANOVA and enter multiple linear regression at the statistical significance level of .05. The results showed that: most of the sample was between 25 - 34 years (35.40%) single status (68.20%) average monthly income of 10001 - 20000 baht (34.10%) education of bachelors degree (55.70%) and work in private companies (48.70%). The average monthly income education level and occupation had different decisions purchasing Japanese skincare products among female consumers with statistical significance at the .05 level. Marketing communication influence female consumers purchasing decision of Japanese skincare products with statistical significance at the .05 level were sales by individuals (29.10%) public relations (18.10%) and promotion (15.80%).