Background
5 It is unnecessary to rehearse the bases upon which the appellant claimed to satisfy the criteria upon which his Visa Application rested. It suffices to note that they focused upon a series of events to which the appellant claimed to have been subjected prior to his departure from Sri Lanka.
6 The IAA did not accept that the appellant satisfied the criteria for the granting of a protection visa. In large part, it was led so to conclude because it did not believe much of the factual narrative upon which his Visa Application was premised. That, in turn, reflected what the IAA perceived to be unconvincing and inconsistent aspects of the evidence that the appellant had advanced in support of his cause.
7 It is to those inconsistencies that attention must presently turn, at least to a degree. Not long after his arrival in Australia, the appellant attended an "entry interview" with a representative of what was then the Commonwealth Department of Immigration and Citizenship. There, he explained why it was that he had left Sri Lanka. Upon filing his Visa Application, he attended a further interview with a representative of what, by then, had come to be known as the Department of Immigration and Border Protection, at which he advanced similar contentions. He was given a third opportunity in that regard by means of the IAA Interview. Additionally, the appellant (via the agency of his advisers) sought to support his Visa Application with a series of written submissions and documents.
8 It is not presently controversial that the accounts that the appellant gave of the things that had happened to him prior to his departure from Sri Lanka (and on the strength of which his Visa Application substantially turned) were not consistently recounted, as the IAA concluded. For that reason, particulars of those events need not here be recited. Instead, what is presently controversial is whether it was open to the IAA to determine, as it did, that the appellant's narrative should be rejected at least partly (if not significantly) because of those inconsistent accounts.
9 Before the IAA, the appellant maintained that he laboured under poor mental health, which affected his memory and cognitive abilities. He relied upon two reports from a social worker, who was apparently of the view that he exhibited "impaired cognitive ability" and symptoms consistent with post-traumatic stress disorder. When asked whether he had any medical evidence to support those suggestions, the appellant's representative supplied to the IAA two documents: an International Health and Medical Services report (the "IHMS Summary"), which summarised some physical and mental health diagnoses that he had received since his arrival into Australia; and a letter dated 17 January 2018 from a psychiatrist (the "Psychiatrist's Letter"). The IHMS Summary and the Psychiatrist's Letter both recorded that the appellant had been diagnosed with major depressive disorder and post-traumatic stress disorder.
10 It is prudent to make some, albeit minimal, reference to the content of that material. The IHMS Summary purported to record some "Health Issue[s]" with which the appellant had been diagnosed and the measures that had been, or were being, employed to address them. Amongst other things, it recorded that the appellant suffered from intrusive nightmares, anxiety, poor sleep, an inclination toward self-harm and thoughts of suicide. Similarly, the Psychiatrist's Letter recorded that he suffered from or was at risk of "…suicidal ideation [both] in the context of hearing news of his visa rejection [and] in the setting of future psychosocial stressors".
11 The IAA considered that material and made reference to it in the written reasons that were published in support of the IAA Decision. After recording the central thrust of what the appellant's social worker had opined, and of what the IHMS Summary and the Psychiatrist's Letter recorded, the IAA made the following observations:
I note that persons affected by conditions like major depression and PTSD can sometimes experience difficulties with memory as a result of these conditions, and I accept that the applicant is affected by major depression, PTSD and anxiety. Nevertheless, and although the applicant has claimed to have very serious problems with his memory, and although his counsellor…is of the view that he does have such problems and also problems with cognition, it was not apparent to me from the applicant's presentation at his IAA interview, or from his presentation at his April 2017 SHEV interview and January 2013 entry interview, that he has significant problems in terms of cognition and/or memory. Significantly, such evidence as is before me from the psychiatrist who formerly treated the applicant, and from the IHMS report as to the treatment the applicant is currently receiving - from an IHMS general practitioner, psychiatrist and IHMS mental health team - gives no indication that the applicant's mental health problems, or that the effects of these or of associated episodes of insomnia and anxiety, are causing him any significant difficulties with memory or cognition. It is apparent from the IHMS report that in December 2019 (after a period of almost two years being held in immigration detention) the applicant broke a table and had to be restrained and expressed feelings of intense anger towards security officers, and of frustration, and that he threatened to commit suicide if he was not released, but there is no indication that he has been seen banging his head during the recent year, or that he has experienced problems with headaches or heart palpitations or the other matters of which the applicant has claimed… Plainly the applicant is affected by some mental health problems and plainly he has found the uncertainty of his migration status, and the matter of his being detained, and his separation from his family in Sri Lanka, very difficult as can be readily understood. But the evidence before me also suggests that the applicant has sometimes sought to exaggerate the extent of his health problems and that this is particularly the case with regard to his claims about his memory.
12 It is primarily upon those observations that the present appeal focuses.