本研究主要的研究目的有二：其一，探討高社會焦慮者對不同情緒臉孔的注意力時間歷程；其二，探討自動化階段與控制式階段所進行的注意力訓練，對於降低注意力偏誤以及改善社會焦慮的效果。基於上述兩項研究目的，分為研究一與研究二進行。研究一中，共有60名參與者完成眼動作業，其中高、低社會焦慮組 (HSA組/ LSA組) 各30名。在眼動作業中，生氣、難過、快樂與中性四類情緒臉孔同時呈現於螢幕上，參與者被指示自由觀賞螢幕上的圖片，直到圖片消失。研究一的結果發現，HSA組對生氣臉的初始注視時間 (initial gaze duration; IGD) 明顯高於LSA組，且高於其它三類情緒臉孔，LSA組對四類情緒臉孔的IGD則沒有差異；其次，LSA組對快樂臉的整體凝視時間比例 (proportion of total viewing time; PTVT) 明顯高於HSA組。時間歷程分析的結果發現，HSA組在751-1000 ms 對生氣臉的凝視可能性高於LSA組，以及在7-8 s對難過臉的凝視可能性高於LSA組；LSA組在9-10 s對快樂臉的凝視可能性高於HSA組。研究一結果指向，高社會焦慮者對威脅刺激可能有注意力脫離困難，同時可能缺少對正向刺激的注意。研究二共有72名高社會焦慮者參與，本研究將注意力訓練的刺激呈現時間操弄為100 ms或500 ms兩種，每一種刺激呈現時間的注意力訓練可分為注意力改變組 (AMP組) 與注意力控制組 (ACC組) 兩種情境，因此共有AMP-100、ACC-100、AMP-500與ACC-500四種訓練情境。所有參與者被隨機分派至四種訓練情境中，並完成八次 (每週兩次，為期四週) 的注意力訓練作業。參與者在注意力訓練的前、後分別完成量表填寫、修改版Posner作業與眼動作業的評估，並且在注意力訓練結束至少一個月後，接受追蹤階段的評估。研究二的結果發現，100 ms的注意力訓練可以增進AMP-100組在修改版Posner作業上對所有無效嘗試次的反應時間；降低其在眼動作業上對生氣臉的IGD；同時改善AMP-100組參與者的負向評價恐懼、互動焦慮以及演講前的預期焦慮。500 ms的注意力訓練可以降低AMP-500組的參與者在修改版Posner作業上對社會威脅詞無效嘗試次的反應時間；減少其在眼動作業上對負向情緒臉孔的注意力維持時間，並增加對正向情緒臉孔的注意力維持時間；同時降低AMP-500組的負向評價恐懼與社會互動焦慮。研究二結果顯示，自動化階段與控制式階段所進行的注意力訓練，均可促進高社會焦慮者對威脅刺激的注意力脫離速度，並且改善社會焦慮。本研究於討論中，針對本研究結果在理論與臨床應用上的意涵進行探討，並提出本研究的限制與對未來研究的建議。 / The purpose of the present study was twofold. First, it aimed to investigate the attentional processing of emotional faces in social anxiety using the eye-tracking technique. Second, it tried to examine the effects of attentional training in reducing attentional bias and in decreasing social anxiety symptoms in high socially anxious individuals. In study 1, a total of 30 high socially anxious (HSA) and 30 low socially anxious (LSA) participants completed the eye-movement task. In the eye-movement task, participants were instructed to view the slides on the monitor naturally. Each slide contained 4 emotional faces (one angry, one sad, one happy and one neutral face). The results showed that the HSA participants had longer initial gaze duration (IGD) on angry faces than the LSA participants did. Further, the LSA participants had higher proportion of total viewing time (PTVT) on happy faces than the HSA participants did. Time-course of attention to emotional faces was also examined. The results showed that the HSA group had higher fixation probabilities to angry faces than the LSA group did in the 751-1000 ms time window. The HSA group exhibited higher fixation probability to sad faces than the LSA group did in the 7-8 s time window. Further, compared with the HSA group, the LSA group had higher fixation probability on happy faces in the 9-10 s time window. The results of study 1 indicate that individuals with high socially anxiety may have difficulty in disengagement form social threatening information and may demonstrate decreased attention to positive information. In study 2, seventy-two high socially anxious participants completed the experiments. In the attention training task, stimuli were presented at two durations: 100 ms and 500 ms. Participants were randomly assigned to four different attentional training conditions, including the AMP-100 (attention modification program; presentation duration = 100 ms), the ACC-100 (attention control condition; presentation duration = 100 ms), the AMP-500 and the ACC-500 group. All participants completed eight attentional training sessions delivered over four weeks (i.e., twice weekly sessions). Participants were also required to complete preassessments, postassessments and follow-up assessments. The results demonstrated that the 100 ms attention modification program facilitated attention disengagement in the Modified Version of Posner task and decreased attentional maintenance to angry faces in the eye-movement task for participants in the AMP-100 group. Furthermore, it reduced the fear of negative evaluation, interaction anxiety and anticipated anxiety for public-speaking situation in the AMP-100 group. The 500 ms attention modification program facilitated the disengagement from social threat words in the Modified Version of Posner task in participants of the AMP-500 group. It also decreased the attentional maintenance to negative faces and increased the attentional maintenance to happy faces in participants of the AMP-500 group. Further, it reduced the fear of negative evaluation and social interaction anxiety in the AMP-500 group. The results of study 2 suggest that attention modofication programs may decrease difficulty in disengagement from threat and reduce some aspects of social anxiety symptoms in individuals with high socially anxiety. Theoretical and clinical implications of these results were discussed.

根據Koster、De Lissnyder、Derakshan及De Raedt（2011）的注意力轉移困難假說，憂鬱者因注意力控制能力受損，而難以從負向訊息中轉移注意力，進而引發反芻，並再度強化憂鬱症狀。雖然反芻可再細分為深思反省與苦惱自責式反芻，但Koster等人未探究注意力轉移困難對苦惱自責式反芻的影響。此外，過往注意力訓練研究作業眾多且效果不一，又偏重改善個體注意力投入以減緩憂鬱。然而，卻鮮少探討注意力訓練對注意力轉移困難的介入，能否改善個體的苦惱自責式反芻程度。因此，本研究將同時探討注意力訓練能否改變高苦惱自責式反芻者對負向訊息的注意力偏誤（含注意力投入與轉移困難），進而降低苦惱自責式反芻程度。本研究以點偵測作業為注意力訓練作業，將高、低苦惱自責式反芻者隨機分派至注意力訓練組或注意力訓練控制組，接受為期兩週、共四次的注意力訓練，並於前、後測階段注意力測量作業中，檢驗對負向訊息的注意力偏誤與三階段中苦惱自責式反芻程度。本研究結果發現高苦惱自責式反芻者對負向訊息無明顯注意力偏誤，注意力訓練作業對高苦惱自責式反芻者的注意力歷程未有明顯影響，乃至苦惱自責式反芻程度的時序變化與接受注意力訓練與否無明顯關聯。本研究結果不支持原先假設、注意力困難假說及過去研究結果。然而，過往學者多強調個體高度負向認知與憂鬱情緒對注意力偏誤的影響，故本研究事後同時納入憂鬱與苦惱自責式反芻程度，欲探討憂鬱苦惱自責式反芻者對負向訊息有無注意力偏誤，乃至注意力訓練對憂鬱苦惱自責式反芻者注意力偏誤的訓練效果。本研究結果僅發現在修正版Posner作業中，憂鬱苦惱自責式反芻者更容易將注意力從負向訊息中轉移開來；在點偵測作業中，未有組間效果；在注意力訓練中，未有訓練效果。最後，本研究將於討論中，探討研究結果的可能原因，並提出本研究限制與未來研究上的建議。 / According to the impaired disengagement hypothesis (Koster, De Lissnyder, Derakshan, & De Raedt, 2011), the dysphoric that are difficult to disengage from negative stimuli due to low attentional control tend to ruminate, and then even worsen their depressive symptoms. Actually, rumination can be differentiated into two components: reflective pondering and brooding, but the core tenet of impaired disengagement hypothesis only puts the emphasis on rumination rather than brooding. Besides, there are many studies investigating the attention-training effects on depressive symptoms rather than rumination. To date, no studies even have investigated the training effects on impaired disengagement and brooding. Therefore, we aimed to examine the effects of attention training on attention bias toward negative stimuli, impaired disengagement from negative stimuli and brooding level in brooders. We investigated the training effect in brooding and non-psychiatric control participants via dot-probe task. During a two-week period, all of the participants were randomly assigned to complete 4 sessions of either attention training or no training. Also, participants completed two attentional tasks examined attention bias at baseline and post-training, and self-reported questionnaires of brooding and depressive symptoms at baseline, post-training, and follow-up. Overall, results indicate that brooders didn’t show attention bias to negative stimuli. Also, no beneficial effects of attention training on attention bias and brooding level were found in brooders. The previous hypothesis, impaired disengagement hypothesis and studies in the past were not supported. However, many cognitive models of depression have postulated that individuals with high levels of negative cognition and depressive affect tend to maintain their attention toward negative information. Therefore, we took levels of depression and brooding into account, and aimed to examine the effects of attention training on both attention bias toward negative stimuli and impaired disengagement from negative stimuli in depressive brooders. Results indicate that depressive brooders tend to disengage from negative stimuli in modified Posner task. No other findings in dot-probe task and attention-training task. Implications of these findings in depressive brooders are discussed and directions for future research are advanced.