現今營建業有許多勞工因在施工前訓練不足的情況下,作業進行時產生心理負荷,進而可能發生身體不適、工作效率降低,更嚴重便會造成勞安意外,正因如此,本研究希望探討訓練學習對於營建勞工作業時心理負荷的影響。 本研究將以利用紅外線熱像儀拍攝受測者的臉部鼻頭溫度,且填寫NASA-TLX自我心裡負荷評量表,以徵集12名自願者進行組搭鷹架實驗,實驗前以觀看鷹架組搭示意圖為訓練方法,任務目標為在20分鐘內將鷹架組搭至兩層樓,每名受測人員皆進行六次不同訓練次數之鷹架組搭試驗,並觀察六次不同實驗受測者之心理負荷。從未經訓練到不同訓練程度之後心理負荷的變化,找出要達到心理負荷趨於平穩的訓練次數。 研究結果顯示,施工前的訓練的確可有效降低施工人員的心理負荷,且訓練次數增加心理負荷的下降量愈多,但當訓練達到一定程度後,心理負荷之下降量將趨於平穩,以本研究之鷹架組搭,約經三次訓練後,心理負荷之下降量可趨平穩。
Recently, there have been many instances where a lack of proper pre-construction training has led to laborers within the construction industry developing negative mental demands while performing their jobs. These negative mental demands can lead to issues such as feeling physically unwell, decreased work efficiency, or worse, occupational safety accidents. Therefore, this study aims to investigate the effect training and learning experience can have on construction laborers’ mental demands. This research used infrared thermal imaging to capture the temperature of the research subjects’ nose, followed by the filling out the NASA-Task Load Index (TLX) personal mental demand inventory. To conduct our experiment, twelve volunteer subjects were asked to read and examine scaffold assembly instructions to serve as training, followed by actual assembly of a scaffold by each subject. The goal was to complete a two-story assembly of the scaffold within twenty minutes, with each subject assembling the scaffold six separate times while observing the mental demand of the subjects during the experiment. Using the change in mental demand of each subject as they progress from untrained to varying levels of training and familiarity with the scaffold assembly, our experiment intends to the find the number of attempts it takes for the subjects’ mental demands to stabilize. The results indicated that pre-construction training is effective in lowering the mental demands of construction laborers, where the increase in the number training and assembly attempts correlated to a decrease in mental demand. However, after the training reached a certain level, the decrease in mental demand tends to stabilize as well. From our experiment of assembling a scaffold, after roughly three attempts of training and assembly, the decrease in mental demand achieved a level of stabilization.